Bug 505042

Summary:	Screen Glitch at bottom of screen with xournalpp, vlc and firefox in tablet mode
Product:	[Plasma] kwin	Reporter:	woojin.jung.04
Component:	compositing	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED WORKSFORME
Severity:	minor	CC:	john.kizer, nate
Priority:	NOR
Version First Reported In:	6.3.5
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description woojin.jung.04 2025-05-31 08:38:37 UTC

SUMMARY
Screen Glitch at bottom of screen with xournalpp, vlc and firefox in tablet mode

STEPS TO REPRODUCE
1. enable fractional scaling
2. use tablet mode with 2in1 laptops
3. open firefox or xournalpp or vlc and wait for ~5 minutes

OBSERVED RESULT
There is a constant flicker at the bottom of the screen. This is not observed when using integer scaling. Firefox also shows weird behaviour with the input bar's flickering causing the window to adjust in size. Moreover, the popup windows on the navigation bars causes the navigation bars to resize, resulting in an unusable desktop.

EXPECTED RESULT
There should not be a flicker.

SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 6.3.5
KDE Frameworks Version: 6.14.0
Qt Version: 6.9.0
Kernel Version: 6.14.7-arch2-1 (64-bit)
Graphics Platform: Wayland
Processors: 14 × Intel® Core™ Ultra 5 125U
Memory: 15.1 GiB of RAM
Graphics Processor: Intel® Graphics

ADDITIONAL INFORMATION

Comment 1 Nate Graham 2025-06-03 22:26:40 UTC

> Moreover, the popup windows on the navigation bars causes the navigation bars to resize, resulting in an unusable desktop.

Can you clarify what this means? Perhaps a screen recording would help illustrate the problem.

Comment 2 John Kizer 2025-06-15 06:19:49 UTC

Updating the status, if the reporter could please provide a screen recording to help folks understand the exact issue? Thanks!

Comment 3 Bug Janitor Service 2025-06-30 03:47:23 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.

Thank you for helping us make KDE software even better for everyone!

Comment 4 Bug Janitor Service 2025-07-15 03:47:25 UTC

🐛🧹 This bug has been in NEEDSINFO status with no change for at least 30 days. Closing as RESOLVED WORKSFORME.