diff --git a/Telegram/SourceFiles/core/application.cpp b/Telegram/SourceFiles/core/application.cpp
index d8c36bc93..524b8111c 100644
--- a/Telegram/SourceFiles/core/application.cpp
+++ b/Telegram/SourceFiles/core/application.cpp
@@ -829,10 +829,6 @@ rpl::producer<bool> Application::appDeactivatedValue() const {
 	});
 }
 
-void Application::call_handleObservables() {
-	base::HandleObservables();
-}
-
 void Application::switchDebugMode() {
 	if (Logs::DebugEnabled()) {
 		Logs::SetDebugEnabled(false);
diff --git a/Telegram/SourceFiles/core/application.h b/Telegram/SourceFiles/core/application.h
index 63ccc30a5..badaf9f94 100644
--- a/Telegram/SourceFiles/core/application.h
+++ b/Telegram/SourceFiles/core/application.h
@@ -297,8 +297,6 @@ public:
 
 	void preventOrInvoke(Fn<void()> &&callback);
 
-	void call_handleObservables();
-
 	// Global runtime variables.
 	void setScreenIsLocked(bool locked);
 	bool screenIsLocked() const;
diff --git a/Telegram/SourceFiles/core/sandbox.cpp b/Telegram/SourceFiles/core/sandbox.cpp
index cc3f1ad62..692f98a6d 100644
--- a/Telegram/SourceFiles/core/sandbox.cpp
+++ b/Telegram/SourceFiles/core/sandbox.cpp
@@ -85,11 +85,6 @@ Sandbox::Sandbox(
 	char **argv)
 : QApplication(argc, argv)
 , _mainThreadId(QThread::currentThreadId())
-, _handleObservables([=] {
-	if (_application) {
-		_application->call_handleObservables();
-	}
-})
 , _launcher(launcher) {
 	setQuitOnLastWindowClosed(false);
 }
@@ -201,10 +196,6 @@ void Sandbox::launchApplication() {
 		}
 		setupScreenScale();
 
-		base::InitObservables([] {
-			Instance()._handleObservables.call();
-		});
-
 		_application = std::make_unique<Application>(_launcher);
 
 		// Ideally this should go to constructor.
diff --git a/Telegram/SourceFiles/core/sandbox.h b/Telegram/SourceFiles/core/sandbox.h
index ca8bbba3d..d2f971c4d 100644
--- a/Telegram/SourceFiles/core/sandbox.h
+++ b/Telegram/SourceFiles/core/sandbox.h
@@ -112,7 +112,6 @@ private:
 	int _loopNestingLevel = 0;
 	std::vector<int> _previousLoopNestingLevels;
 	std::vector<PostponedCall> _postponedCalls;
-	SingleQueuedInvokation _handleObservables;
 
 	not_null<Launcher*> _launcher;
 	std::unique_ptr<Application> _application;
diff --git a/Telegram/SourceFiles/dialogs/dialogs_inner_widget.cpp b/Telegram/SourceFiles/dialogs/dialogs_inner_widget.cpp
index 57296a86e..ad2034417 100644
--- a/Telegram/SourceFiles/dialogs/dialogs_inner_widget.cpp
+++ b/Telegram/SourceFiles/dialogs/dialogs_inner_widget.cpp
@@ -2508,9 +2508,8 @@ void InnerWidget::refresh(bool toTop) {
 		_mustScrollTo.fire({ 0, 0 });
 		loadPeerPhotos();
 	}
-	_controller->dialogsListDisplayForced().set(
-		_searchInChat || !_filter.isEmpty(),
-		true);
+	_controller->setDialogsListDisplayForced(
+		_searchInChat || !_filter.isEmpty());
 	update();
 }
 
@@ -2648,9 +2647,8 @@ void InnerWidget::searchInChat(Key key, PeerData *from) {
 	}
 	moveCancelSearchButtons();
 
-	_controller->dialogsListDisplayForced().set(
-		_searchInChat || !_filter.isEmpty(),
-		true);
+	_controller->setDialogsListDisplayForced(
+		_searchInChat || !_filter.isEmpty());
 }
 
 void InnerWidget::refreshSearchInChatLabel() {
diff --git a/Telegram/SourceFiles/mainwidget.cpp b/Telegram/SourceFiles/mainwidget.cpp
index 067f138f4..330681202 100644
--- a/Telegram/SourceFiles/mainwidget.cpp
+++ b/Telegram/SourceFiles/mainwidget.cpp
@@ -294,12 +294,13 @@ MainWidget::MainWidget(
 		_player->finishAnimating();
 	}
 
-	subscribe(_controller->dialogsListFocused(), [this](bool) {
+	rpl::merge(
+		_controller->dialogsListFocusedChanges(),
+		_controller->dialogsListDisplayForcedChanges()
+	) | rpl::start_with_next([=] {
 		updateDialogsWidthAnimated();
-	});
-	subscribe(_controller->dialogsListDisplayForced(), [this](bool) {
-		updateDialogsWidthAnimated();
-	});
+	}, lifetime());
+
 	rpl::merge(
 		Core::App().settings().dialogsWidthRatioChanges() | rpl::to_empty,
 		Core::App().settings().thirdColumnWidthChanges() | rpl::to_empty
@@ -1396,7 +1397,7 @@ void MainWidget::ui_showPeerHistory(
 		}
 	}
 
-	_controller->dialogsListFocused().set(false, true);
+	_controller->setDialogsListFocused(false);
 	_a_dialogsWidth.stop();
 
 	using Way = SectionShow::Way;
@@ -1751,7 +1752,7 @@ void MainWidget::showNewSection(
 		controller()->window().hideSettingsAndLayer();
 	}
 
-	_controller->dialogsListFocused().set(false, true);
+	_controller->setDialogsListFocused(false);
 	_a_dialogsWidth.stop();
 
 	auto mainSectionTop = getMainSectionTop();
@@ -2619,10 +2620,10 @@ bool MainWidget::eventFilter(QObject *o, QEvent *e) {
 			if (_history == widget || _history->isAncestorOf(widget)
 				|| (_mainSection && (_mainSection == widget || _mainSection->isAncestorOf(widget)))
 				|| (_thirdSection && (_thirdSection == widget || _thirdSection->isAncestorOf(widget)))) {
-				_controller->dialogsListFocused().set(false);
+				_controller->setDialogsListFocused(false);
 			} else if (_dialogs
 				&& (_dialogs == widget || _dialogs->isAncestorOf(widget))) {
-				_controller->dialogsListFocused().set(true);
+				_controller->setDialogsListFocused(true);
 			}
 		}
 	} else if (e->type() == QEvent::MouseButtonPress) {
diff --git a/Telegram/SourceFiles/mainwidget.h b/Telegram/SourceFiles/mainwidget.h
index d5a26ae89..c90f5002b 100644
--- a/Telegram/SourceFiles/mainwidget.h
+++ b/Telegram/SourceFiles/mainwidget.h
@@ -113,8 +113,7 @@ class ItemBase;
 
 class MainWidget
 	: public Ui::RpWidget
-	, private Media::Player::FloatDelegate
-	, private base::Subscriber {
+	, private Media::Player::FloatDelegate {
 public:
 	using SectionShow = Window::SectionShow;
 
diff --git a/Telegram/SourceFiles/media/audio/media_audio.cpp b/Telegram/SourceFiles/media/audio/media_audio.cpp
index cb19b704a..0f82da9b0 100644
--- a/Telegram/SourceFiles/media/audio/media_audio.cpp
+++ b/Telegram/SourceFiles/media/audio/media_audio.cpp
@@ -305,12 +305,12 @@ constexpr auto kCheckPlaybackPositionTimeout = crl::time(100); // 100ms per chec
 constexpr auto kCheckPlaybackPositionDelta = 2400LL; // update position called each 2400 samples
 constexpr auto kCheckFadingTimeout = crl::time(7); // 7ms
 
-base::Observable<AudioMsgId> UpdatedObservable;
+rpl::event_stream<AudioMsgId> UpdatedStream;
 
 } // namespace
 
-base::Observable<AudioMsgId> &Updated() {
-	return UpdatedObservable;
+rpl::producer<AudioMsgId> Updated() {
+	return UpdatedStream.events();
 }
 
 // Thread: Any. Must be locked: AudioMutex.
@@ -648,7 +648,11 @@ void Mixer::onUpdated(const AudioMsgId &audio) {
 	if (audio.externalPlayId()) {
 		externalSoundProgress(audio);
 	}
-	Media::Player::Updated().notify(audio);
+	crl::on_main([=] {
+		// We've replaced base::Observable with on_main, because
+		// base::Observable::notify is not syncronous by default.
+		UpdatedStream.fire_copy(audio);
+	});
 }
 
 // Thread: Any. Must be locked: AudioMutex.
diff --git a/Telegram/SourceFiles/media/audio/media_audio.h b/Telegram/SourceFiles/media/audio/media_audio.h
index 793e0d2e8..d1938e7f0 100644
--- a/Telegram/SourceFiles/media/audio/media_audio.h
+++ b/Telegram/SourceFiles/media/audio/media_audio.h
@@ -12,7 +12,6 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "core/file_location.h"
 #include "data/data_audio_msg_id.h"
 #include "base/bytes.h"
-#include "base/observer.h"
 #include "base/timer.h"
 
 #include <QtCore/QTimer>
@@ -60,7 +59,7 @@ constexpr auto kWaveformSamplesCount = 100;
 class Fader;
 class Loaders;
 
-base::Observable<AudioMsgId> &Updated();
+[[nodiscard]] rpl::producer<AudioMsgId> Updated();
 
 float64 ComputeVolume(AudioMsgId::Type type);
 
diff --git a/Telegram/SourceFiles/media/player/media_player_float.h b/Telegram/SourceFiles/media/player/media_player_float.h
index af9a68014..2e9de4c1f 100644
--- a/Telegram/SourceFiles/media/player/media_player_float.h
+++ b/Telegram/SourceFiles/media/player/media_player_float.h
@@ -11,7 +11,6 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "ui/rect_part.h"
 #include "ui/effects/animations.h"
 #include "base/object_ptr.h"
-#include "base/observer.h"
 
 namespace Window {
 class SessionController;
@@ -48,7 +47,7 @@ private:
 
 };
 
-class Float : public Ui::RpWidget, private base::Subscriber {
+class Float final : public Ui::RpWidget {
 public:
 	Float(
 		QWidget *parent,
@@ -210,12 +209,13 @@ private:
 
 };
 
-class FloatController : private base::Subscriber {
+class FloatController final {
 public:
 	explicit FloatController(not_null<FloatDelegate*> delegate);
 
 	void replaceDelegate(not_null<FloatDelegate*> delegate);
-	rpl::producer<FullMsgId> closeEvents() const {
+
+	[[nodiscard]] rpl::producer<FullMsgId> closeEvents() const {
 		return _closeEvents.events();
 	}
 
diff --git a/Telegram/SourceFiles/media/player/media_player_instance.cpp b/Telegram/SourceFiles/media/player/media_player_instance.cpp
index 9cc24e5a9..3c17f346f 100644
--- a/Telegram/SourceFiles/media/player/media_player_instance.cpp
+++ b/Telegram/SourceFiles/media/player/media_player_instance.cpp
@@ -146,9 +146,10 @@ Instance::Data::~Data() = default;
 Instance::Instance()
 : _songData(AudioMsgId::Type::Song, SharedMediaType::MusicFile)
 , _voiceData(AudioMsgId::Type::Voice, SharedMediaType::RoundVoiceFile) {
-	subscribe(Media::Player::Updated(), [this](const AudioMsgId &audioId) {
+	Media::Player::Updated(
+	) | rpl::start_with_next([=](const AudioMsgId &audioId) {
 		handleSongUpdate(audioId);
-	});
+	}, _lifetime);
 
 	repeatChanges(
 		&_songData
@@ -157,6 +158,7 @@ Instance::Instance()
 			refreshPlaylist(&_songData);
 		}
 	}, _lifetime);
+
 	orderChanges(
 		&_songData
 	) | rpl::start_with_next([=](OrderMode mode) {
diff --git a/Telegram/SourceFiles/media/player/media_player_instance.h b/Telegram/SourceFiles/media/player/media_player_instance.h
index 31f5a68f9..e8b9f847c 100644
--- a/Telegram/SourceFiles/media/player/media_player_instance.h
+++ b/Telegram/SourceFiles/media/player/media_player_instance.h
@@ -7,7 +7,6 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 */
 #pragma once
 
-#include "base/observer.h"
 #include "data/data_audio_msg_id.h"
 #include "data/data_shared_media.h"
 
@@ -70,7 +69,7 @@ void SaveLastPlaybackPosition(
 
 not_null<Instance*> instance();
 
-class Instance : private base::Subscriber {
+class Instance final {
 public:
 	enum class Seeking {
 		Start,
diff --git a/Telegram/SourceFiles/media/streaming/media_streaming_audio_track.cpp b/Telegram/SourceFiles/media/streaming/media_streaming_audio_track.cpp
index 7b538ca24..6e80ed76f 100644
--- a/Telegram/SourceFiles/media/streaming/media_streaming_audio_track.cpp
+++ b/Telegram/SourceFiles/media/streaming/media_streaming_audio_track.cpp
@@ -198,7 +198,7 @@ rpl::producer<crl::time> AudioTrack::playPosition() {
 
 	if (!_subscription) {
 		_subscription = Media::Player::Updated(
-		).add_subscription([=](const AudioMsgId &id) {
+		) | rpl::start_with_next([=](const AudioMsgId &id) {
 			using State = Media::Player::State;
 			if (id != _audioId) {
 				return;
diff --git a/Telegram/SourceFiles/media/streaming/media_streaming_audio_track.h b/Telegram/SourceFiles/media/streaming/media_streaming_audio_track.h
index 8620f8d7b..ec6a4ff7b 100644
--- a/Telegram/SourceFiles/media/streaming/media_streaming_audio_track.h
+++ b/Telegram/SourceFiles/media/streaming/media_streaming_audio_track.h
@@ -7,7 +7,6 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 */
 #pragma once
 
-#include "base/observer.h"
 #include "media/streaming/media_streaming_utility.h"
 
 namespace Media {
@@ -80,7 +79,7 @@ private:
 	crl::time _startedPosition = kTimeUnknown;
 
 	// Accessed from the main thread.
-	base::Subscription _subscription;
+	rpl::lifetime _subscription;
 	rpl::event_stream<> _waitingForData;
 	// First set from the same unspecified thread before _ready is called.
 	// After that accessed from the main thread.
diff --git a/Telegram/SourceFiles/media/system_media_controls_manager.cpp b/Telegram/SourceFiles/media/system_media_controls_manager.cpp
index fb37eb4c6..8601340fc 100644
--- a/Telegram/SourceFiles/media/system_media_controls_manager.cpp
+++ b/Telegram/SourceFiles/media/system_media_controls_manager.cpp
@@ -8,7 +8,6 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "media/system_media_controls_manager.h"
 
 #include "media/audio/media_audio.h"
-#include "base/observer.h"
 #include "base/platform/base_platform_system_media_controls.h"
 #include "core/application.h"
 #include "core/core_settings.h"
diff --git a/Telegram/SourceFiles/window/themes/window_theme_editor.cpp b/Telegram/SourceFiles/window/themes/window_theme_editor.cpp
index e8f34314d..961e1ddd8 100644
--- a/Telegram/SourceFiles/window/themes/window_theme_editor.cpp
+++ b/Telegram/SourceFiles/window/themes/window_theme_editor.cpp
@@ -201,7 +201,7 @@ QString bytesToUtf8(QLatin1String bytes) {
 
 } // namespace
 
-class Editor::Inner : public Ui::RpWidget, private base::Subscriber {
+class Editor::Inner final : public Ui::RpWidget {
 public:
 	Inner(QWidget *parent, const QString &path);
 
@@ -397,24 +397,36 @@ Editor::Inner::Inner(QWidget *parent, const QString &path)
 , _existingRows(this, EditorBlock::Type::Existing, &_context)
 , _newRows(this, EditorBlock::Type::New, &_context) {
 	resize(st::windowMinWidth, st::windowMinHeight);
-	subscribe(_context.resized, [this] {
+
+	_context.resized.events(
+	) | rpl::start_with_next([=] {
 		resizeToWidth(width());
-	});
-	subscribe(_context.pending, [this](const EditorBlock::Context::EditionData &data) {
+	}, lifetime());
+
+	using Context = EditorBlock::Context;
+	_context.pending.events(
+	) | rpl::start_with_next([=](const Context::EditionData &data) {
 		applyEditing(data.name, data.copyOf, data.value);
-	});
-	subscribe(_context.updated, [this] {
+	}, lifetime());
+
+	_context.updated.events(
+	) | rpl::start_with_next([=] {
 		if (_context.name.isEmpty() && _focusCallback) {
 			_focusCallback();
 		}
-	});
-	subscribe(_context.scroll, [this](const EditorBlock::Context::ScrollData &data) {
+	}, lifetime());
+
+	_context.scroll.events(
+	) | rpl::start_with_next([=](const Context::ScrollData &data) {
 		if (_scrollCallback) {
-			auto top = (data.type == EditorBlock::Type::Existing ? _existingRows : _newRows)->y();
+			auto top = (data.type == EditorBlock::Type::Existing
+				? _existingRows
+				: _newRows)->y();
 			top += data.position;
 			_scrollCallback(top, top + data.height);
 		}
-	});
+	}, lifetime());
+
 	Background()->updates(
 	) | rpl::start_with_next([=](const BackgroundUpdate &update) {
 		if (_applyingUpdate || !Background()->editingTheme()) {
diff --git a/Telegram/SourceFiles/window/themes/window_theme_editor_block.cpp b/Telegram/SourceFiles/window/themes/window_theme_editor_block.cpp
index a7dda1ec1..e4e5ec98a 100644
--- a/Telegram/SourceFiles/window/themes/window_theme_editor_block.cpp
+++ b/Telegram/SourceFiles/window/themes/window_theme_editor_block.cpp
@@ -167,20 +167,25 @@ void EditorBlock::Row::fillSearchIndex() {
 	}
 }
 
-EditorBlock::EditorBlock(QWidget *parent, Type type, Context *context) : TWidget(parent)
+EditorBlock::EditorBlock(QWidget *parent, Type type, Context *context)
+: RpWidget(parent)
 , _type(type)
 , _context(context)
 , _transparent(style::TransparentPlaceholder()) {
 	setMouseTracking(true);
-	subscribe(_context->updated, [this] {
+
+	_context->updated.events(
+	) | rpl::start_with_next([=] {
 		if (_mouseSelection) {
 			_lastGlobalPos = QCursor::pos();
 			updateSelected(mapFromGlobal(_lastGlobalPos));
 		}
 		update();
-	});
+	}, lifetime());
+
 	if (_type == Type::Existing) {
-		subscribe(_context->appended, [this](const Context::AppendData &added) {
+		_context->appended.events(
+		) | rpl::start_with_next([=](const Context::AppendData &added) {
 			auto name = added.name;
 			auto value = added.value;
 			feed(name, value);
@@ -194,14 +199,15 @@ EditorBlock::EditorBlock(QWidget *parent, Type type, Context *context) : TWidget
 			row->setCopyOf(copyOf);
 			addToSearch(*row);
 
-			_context->changed.notify({ QStringList(name), value }, true);
-			_context->resized.notify();
-			_context->pending.notify({ name, copyOf, value }, true);
-		});
+			_context->changed.fire({ QStringList(name), value });
+			_context->resized.fire({});
+			_context->pending.fire({ name, copyOf, value });
+		}, lifetime());
 	} else {
-		subscribe(_context->changed, [this](const Context::ChangeData &data) {
+		_context->changed.events(
+		) | rpl::start_with_next([=](const Context::ChangeData &data) {
 			checkCopiesChanged(0, data.names, data.value);
-		});
+		}, lifetime());
 	}
 }
 
@@ -310,7 +316,7 @@ void EditorBlock::activateRow(const Row &row) {
 			}));
 			_context->box = box;
 			_context->name = row.name();
-			_context->updated.notify();
+			_context->updated.fire({});
 		}
 	}
 }
@@ -335,11 +341,8 @@ bool EditorBlock::selectSkip(int direction) {
 
 void EditorBlock::scrollToSelected() {
 	if (_selected >= 0) {
-		Context::ScrollData update;
-		update.type = _type;
-		update.position = rowAtIndex(_selected).top();
-		update.height = rowAtIndex(_selected).height();
-		_context->scroll.notify(update, true);
+		const auto &row = rowAtIndex(_selected);
+		_context->scroll.fire({ _type, row.top(), row.height() });
 	}
 }
 
@@ -383,7 +386,7 @@ void EditorBlock::searchByQuery(QString query) {
 			}
 		}
 
-		_context->resized.notify(true);
+		_context->resized.fire({});
 	}
 }
 
@@ -556,7 +559,7 @@ void EditorBlock::saveEditing(QColor value) {
 
 		removeRow(name, false);
 
-		_context->appended.notify({ name, possibleCopyOf, color, description }, true);
+		_context->appended.fire({ name, possibleCopyOf, color, description });
 	} else if (_type == Type::Existing) {
 		removeFromSearch(row);
 
@@ -576,7 +579,7 @@ void EditorBlock::saveEditing(QColor value) {
 
 		if (valueChanged || copyOfChanged) {
 			checkCopiesChanged(_editing + 1, QStringList(name), value);
-			_context->pending.notify({ name, copyOf, value }, true);
+			_context->pending.fire({ name, copyOf, value });
 		}
 	}
 	cancelEditing();
@@ -593,7 +596,7 @@ void EditorBlock::checkCopiesChanged(int startIndex, QStringList names, QColor v
 		}
 	}
 	if (_type == Type::Existing) {
-		_context->changed.notify({ names, value }, true);
+		_context->changed.fire({ names, value });
 	}
 }
 
@@ -608,7 +611,7 @@ void EditorBlock::cancelEditing() {
 	_context->possibleCopyOf = QString();
 	if (!_context->name.isEmpty()) {
 		_context->name = QString();
-		_context->updated.notify();
+		_context->updated.fire({});
 	}
 }
 
diff --git a/Telegram/SourceFiles/window/themes/window_theme_editor_block.h b/Telegram/SourceFiles/window/themes/window_theme_editor_block.h
index a0629d580..fc90d87f0 100644
--- a/Telegram/SourceFiles/window/themes/window_theme_editor_block.h
+++ b/Telegram/SourceFiles/window/themes/window_theme_editor_block.h
@@ -7,7 +7,6 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 */
 #pragma once
 
-#include "base/observer.h"
 #include "ui/rp_widget.h"
 
 class EditColorBox;
@@ -15,7 +14,7 @@ class EditColorBox;
 namespace Window {
 namespace Theme {
 
-class EditorBlock : public TWidget, private base::Subscriber {
+class EditorBlock final : public Ui::RpWidget {
 public:
 	enum class Type {
 		Existing,
@@ -26,8 +25,8 @@ public:
 		QString name;
 		QString possibleCopyOf;
 
-		base::Observable<void> updated;
-		base::Observable<void> resized;
+		rpl::event_stream<> updated;
+		rpl::event_stream<> resized;
 
 		struct AppendData {
 			QString name;
@@ -35,27 +34,27 @@ public:
 			QColor value;
 			QString description;
 		};
-		base::Observable<AppendData> appended;
+		rpl::event_stream<AppendData> appended;
 
 		struct ChangeData {
 			QStringList names;
 			QColor value;
 		};
-		base::Observable<ChangeData> changed;
+		rpl::event_stream<ChangeData> changed;
 
 		struct EditionData {
 			QString name;
 			QString copyOf;
 			QColor value;
 		};
-		base::Observable<EditionData> pending;
+		rpl::event_stream<EditionData> pending;
 
 		struct ScrollData {
-			Type type;
-			int position;
-			int height;
+			Type type = {};
+			int position = 0;
+			int height = 0;
 		};
-		base::Observable<ScrollData> scroll;
+		rpl::event_stream<ScrollData> scroll;
 	};
 	EditorBlock(QWidget *parent, Type type, Context *context);
 
diff --git a/Telegram/SourceFiles/window/window_lock_widgets.cpp b/Telegram/SourceFiles/window/window_lock_widgets.cpp
index 58cb91ccc..5cff225b7 100644
--- a/Telegram/SourceFiles/window/window_lock_widgets.cpp
+++ b/Telegram/SourceFiles/window/window_lock_widgets.cpp
@@ -41,7 +41,7 @@ not_null<Controller*> LockWidget::window() const {
 
 void LockWidget::setInnerFocus() {
 	if (const auto controller = _window->sessionController()) {
-		controller->dialogsListFocused().set(false, true);
+		controller->setDialogsListFocused(false);
 	}
 	setFocus();
 }
diff --git a/Telegram/SourceFiles/window/window_session_controller.cpp b/Telegram/SourceFiles/window/window_session_controller.cpp
index 7c0079c2b..ee27fd125 100644
--- a/Telegram/SourceFiles/window/window_session_controller.cpp
+++ b/Telegram/SourceFiles/window/window_session_controller.cpp
@@ -1234,9 +1234,9 @@ int SessionController::minimalThreeColumnWidth() const {
 }
 
 bool SessionController::forceWideDialogs() const {
-	if (dialogsListDisplayForced().value()) {
+	if (_dialogsListDisplayForced.current()) {
 		return true;
-	} else if (dialogsListFocused().value()) {
+	} else if (_dialogsListFocused.current()) {
 		return true;
 	}
 	return !content()->isMainSectionShown();
diff --git a/Telegram/SourceFiles/window/window_session_controller.h b/Telegram/SourceFiles/window/window_session_controller.h
index b860e987e..5c6bc6dda 100644
--- a/Telegram/SourceFiles/window/window_session_controller.h
+++ b/Telegram/SourceFiles/window/window_session_controller.h
@@ -9,7 +9,6 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 
 #include "base/flags.h"
 #include "base/object_ptr.h"
-#include "base/observer.h"
 #include "base/weak_ptr.h"
 #include "base/timer.h"
 #include "boxes/gift_premium_box.h" // GiftPremiumValidator.
@@ -480,17 +479,24 @@ public:
 
 	void toggleChooseChatTheme(not_null<PeerData*> peer);
 
-	base::Variable<bool> &dialogsListFocused() {
-		return _dialogsListFocused;
+	[[nodiscard]] bool dialogsListFocused() const {
+		return _dialogsListFocused.current();
 	}
-	const base::Variable<bool> &dialogsListFocused() const {
-		return _dialogsListFocused;
+	[[nodiscard]] rpl::producer<bool> dialogsListFocusedChanges() const {
+		return _dialogsListFocused.changes();
 	}
-	base::Variable<bool> &dialogsListDisplayForced() {
-		return _dialogsListDisplayForced;
+	void setDialogsListFocused(bool value) {
+		_dialogsListFocused = value;
 	}
-	const base::Variable<bool> &dialogsListDisplayForced() const {
-		return _dialogsListDisplayForced;
+	[[nodiscard]] bool dialogsListDisplayForced() const {
+		return _dialogsListDisplayForced.current();
+	}
+	[[nodiscard]] auto dialogsListDisplayForcedChanges() const
+	-> rpl::producer<bool> {
+		return _dialogsListDisplayForced.changes();
+	}
+	void setDialogsListDisplayForced(bool value) {
+		_dialogsListDisplayForced = value;
 	}
 
 	not_null<SessionController*> parentController() override {
@@ -611,8 +617,8 @@ private:
 
 	rpl::variable<Dialogs::RowDescriptor> _activeChatEntry;
 	rpl::lifetime _activeHistoryLifetime;
-	base::Variable<bool> _dialogsListFocused = { false };
-	base::Variable<bool> _dialogsListDisplayForced = { false };
+	rpl::variable<bool> _dialogsListFocused = false;
+	rpl::variable<bool> _dialogsListDisplayForced = false;
 	std::deque<Dialogs::RowDescriptor> _chatEntryHistory;
 	int _chatEntryHistoryPosition = -1;
 	bool _filtersActivated = false;
diff --git a/Telegram/lib_base b/Telegram/lib_base
index ff0d99dea..456088497 160000
--- a/Telegram/lib_base
+++ b/Telegram/lib_base
@@ -1 +1 @@
-Subproject commit ff0d99dea36c80650acc2cd9c0dd3b24db6b8c1d
+Subproject commit 4560884973dd855d9d06f0a9c09f5156e5a06dde