Bug 465528

Summary:	Windows that get activated by Alt+Tab and Alt+` get lowered when only one window per app exists
Product:	[Plasma] kwin	Reporter:	TYY331 <sebastian.pb31>
Component:	tabbox	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	CONFIRMED ---
Severity:	normal	CC:	nate
Priority:	NOR
Version First Reported In:	5.26.5
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description TYY331 2023-02-10 01:35:27 UTC

Using Alt+Tab to change applications (by setting only one window per application) and using Alt+` to switch between windows of the same application (like what Gnome does) bugs when there is only one window of some application.


STEPS TO REPRODUCE
1. Go to settings and task switcher behavior, enable one window per application, bind the current application switcher shortcut to Alt+`
2. Open two application, for example Dolphin and Konsole, while for example Dolphin is the active window, hit Alt+Tab (so that konsole gets selected), then without releasing the Alt key, hit the ` key to cycle, since Konsole has only one window opened, only one result is shown, then release the keys to activate the Konsole window

OBSERVED RESULT
Konsole window gets activated but it's lowered, meaning all other applications are on top, needing to Alt+Tab again to correctly raise the windows.

EXPECTED RESULT
Konsole window gets activated and raised, note that this bug only happens if the application has one window, if there are multiple windows of the same application the task switcher works as expected

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 5.26.5
KDE Plasma Version: 5.26.5
KDE Frameworks Version: 5.102.0
Qt Version: 5.15.8

Comment 1 TYY331 2023-02-11 14:23:19 UTC

I've discovered that this bug might be related to the effects, since disabling the option to show the selected window in the task switcher settings fixed the issues

Comment 2 Nate Graham 2023-02-12 21:59:32 UTC

Can reproduce.