diff --git a/src/window.c b/src/window.c
index 15d6cf94b0e..72d10f9da23 100644
--- a/src/window.c
+++ b/src/window.c
@@ -7980,6 +7980,9 @@ If PIXELS-P is non-nil, the return value is VSCROLL.  */)
 
 	  /* Prevent redisplay shortcuts.  */
 	  XBUFFER (w->contents)->prevent_redisplay_optimizations_p = true;
+
+	  /* Mark W for redisplay.  (bug#55299) */
+	  wset_redisplay (w);
 	}
     }