https://bugs.kde.org/show_bug.cgi?id=393139
Bug ID: 393139
Summary: Jarring restoration of minimized window with activated
"show selected window" in task switcher settings
Product: kwin
Version: 5.12.4
Platform: unspecified
OS: Linux
Status: UNCONFIRMED
Severity: normal
Priority: NOR
Component: effects-various
Assignee: kwin-bugs-n...@kde.org
Reporter: waz...@protonmail.com
Target Milestone: ---
Flags: Usability+
When the option "show selected window" is enabled in the task switcher settings
(available for most task switchers) and the user uses the task switcher with
alt-tab, while still holding alt a preview of the currently selected window is
shown on screen above the rest. On releasing tab, the window preview
immediately disappears and the relatively slow restore from minimized state
animation plays if enabled, or if disabled it still takes a noticeable moment
for the window to appear after its preview has already disappeared. This is a
jarring and unpolished transition with distracting flashing of said window.
Steps to reproduce (try with and without "Minimize Animation" from Desktop
Effects):
1. Make sure that "show selected window" is activated in task switcher settings
with any task switcher that supports it
2. Minimize a window
3. Use the task switcher (alt-tab by default) to highlight that window and keep
the alt key pressed.
4. A preview of the window appears on screen
5. Release alt
Actual results:
A jarring restoration of the minimized window happens and there is flashing, as
described in more detail above.
Expected results:
There is a smooth and seamless transition between the preview and the actual
window.
Possible solution:
Perhaps the restore from minimized state animation should not be played at all
when "show selected window" is activated. Additionally, there should be no
flashing, for example by keeping the window preview visible until the actual
window has been drawn below it.
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