Bug 512483

Summary:	Alt + F4 can cause modifier keys to close programs on press
Product:	[Plasma] kwin	Reporter:	p4radigma
Component:	input	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	NEEDSINFO WAITINGFORINFO
Severity:	normal	CC:	duha.bugs, p4radigma
Priority:	NOR
Version First Reported In:	6.5.3
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description p4radigma 2025-11-22 18:46:01 UTC

SUMMARY
Sometimes when pressing Alt + F4 it can cause problems with modifier keys (Alt and Ctrl). When pressing Alt or Ctrl after the bug appeared, the focused application closes. Also the Super key stops working. The bug may be fixed if you press any non-modifier key (such as any letter or number). Tho this issue is rare (I think the chance of occuring is about 20%), it is still very annoying.

STEPS TO REPRODUCE
1. Press Alt + F4
2. Press Alt or Ctrl

OBSERVED RESULT
The focused application closes and Super key is no longer working.

EXPECTED RESULT
Nothing happens.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Arch Linux, kernel 6.17.8
KDE Plasma Version: 6.5.3
KDE Frameworks Version: 6.20.0
Qt Version: 6.10.0

ADDITIONAL INFORMATION
This issue has been following me for a long time across several Linux distributions and KWin's version, so this is surely not an issue with Arch Linux or current version of any software.

Comment 1 p4radigma 2025-11-22 18:50:18 UTC

Graphics Platform: Wayland

Comment 2 Vlad Zahorodnii 2025-12-10 14:43:43 UTC

Works fine for me. Can you please provide more details how to reproduce  the bug?

Comment 3 Bug Janitor Service 2025-12-25 03:46:40 UTC

🐛🧹 ⚠️ This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information, then set the bug status to REPORTED. If there is no change for at least 30 days, it will be automatically closed as RESOLVED WORKSFORME.

For more information about our bug triaging procedures, please read https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging.

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