[graphics/krita] libs/ui: Fix assistant preview not instantly updating when toggled

Git commit 2755e8e0effce1a68198881fe984203a3abf4783 by Dmitry Kazakov, on behalf of Luna Lovecraft.
Committed on 28/07/2026 at 11:30.
Pushed by dkazakov into branch 'master'.

Fix assistant preview not instantly updating when toggled

Before this commit if the assistant preview is toggled with a shortcut
the user would have to move the stylus/cursor slightly for it to
appear/disappear

M  +1    -0    libs/ui/kis_painting_assistants_decoration.cpp

https://invent.kde.org/graphics/krita/-/commit/2755e8e0effce1a68198881fe984203a3abf4783

diff --git a/libs/ui/kis_painting_assistants_decoration.cpp b/libs/ui/kis_painting_assistants_decoration.cpp
index 5eb9cdea9ed..09e659b6dbc 100644
--- a/libs/ui/kis_painting_assistants_decoration.cpp
+++ b/libs/ui/kis_painting_assistants_decoration.cpp
@@ -491,6 +491,7 @@ void KisPaintingAssistantsDecoration::toggleOutlineVisible()
 {
     // "outline" means assistant preview (line that depends on the mouse cursor)
     setOutlineVisible(!outlineVisibility());
+    uncache();
 }
 
 QColor KisPaintingAssistantsDecoration::globalAssistantsColor()