Bug 507155 - "Screens" checkbox under "Filter windows by" doesn't appear when only one screen is available
Summary: "Screens" checkbox under "Filter windows by" doesn't appear when only one scr...
Status: CONFIRMED
Alias: None
Product: systemsettings
Classification: Applications
Component: kcm_kwintabbox (other bugs)
Version First Reported In: 6.3.5
Platform: Other Linux
: NOR normal
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2025-07-17 13:47 UTC by Alexander Potashev
Modified: 2025-09-18 23:59 UTC (History)
3 users (show)

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Description Alexander Potashev 2025-07-17 13:47:41 UTC 
SUMMARY
"Screens" checkbox under "Filter windows by" doesn't appear when only one screen is available.

STEPS TO REPRODUCE
1. I would like to set "Filter windows by... Screens: Current screen".
2. 
3. 

OBSERVED RESULT
No such UI element in the KCM.

Workaround: connect an external monitor temporarily, restart the KCM, update the settings, disconnect the monitor.

EXPECTED RESULT
The UI element should be available in the KCM.

SOFTWARE/OS VERSIONS
Operating System: Debian GNU/Linux rodete 
KDE Plasma Version: 6.3.5
KDE Frameworks Version: 6.13.0
Qt Version: 6.8.2
Kernel Version: 6.12.27-1rodete1-amd64 (64-bit)
Graphics Platform: X11
Processors: 14 × Intel® Core™ Ultra 7 165U
Memory: 62.3 GiB of RAM
Graphics Processor: Intel® Graphics

ADDITIONAL INFORMATION
Comment 1 TraceyC 2025-07-21 21:17:54 UTC 
Confirmed this behavior on git-master. It looks like this is by design, but I see the usefulness of being able to change this setting regardless of whether a second screen is currently connected and active or not. We live in a world where laptops are connected and disconnected from external monitors regularly.