Bug 468841

Summary:	Alt+Tab hides all windows on the other screen
Product:	[Plasma] kwin	Reporter:	Alexander Potashev <aspotashev>
Component:	tabbox	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED INTENTIONAL
Severity:	normal	CC:	nate
Priority:	NOR
Version First Reported In:	5.26.4
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Alexander Potashev 2023-04-22 23:14:42 UTC

SUMMARY
Alt+Tab hides all windows on the other screen when switching between windows on the current screen.

STEPS TO REPRODUCE
1. Have two monitors attached
2. On the first screen: open at least one window
3. On the second screen: no windows open
4. In System Settings / Task Switcher settings: Filter by screen when switching with Alt+Tab.
5. Move the mouse pointer the to second screen
6. Press Alt+Tab and release.

OBSERVED RESULT
Nothing should happen.

EXPECTED RESULT
The window on the first screen is hidden.

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: 5.26.4
(available in About System)
KDE Plasma Version: 5.26.4
KDE Frameworks Version: 5.101.0
Qt Version: 5.15.7

ADDITIONAL INFORMATION

Comment 1 Bug Janitor Service 2023-04-22 23:33:54 UTC

Thank you for the bug report!

Please note that Plasma 5.26.4 will not be supported for much longer by KDE; supported versions are 5.27, and 5.27 or newer.

Please upgrade to the latest version as soon as your distribution makes it available to you. Plasma is a fast-moving project, and bugs in one version are often fixed in the next one.

Comment 2 Nate Graham 2023-04-24 18:53:47 UTC

At the moment the behavior is intentional. You can disable this behavior in System Settings > Window Management > Task Switcher > Uncheck "Show selected window" if you don't like it.