Bug 436576

Summary:	Line numbers panel becomes transparent for a short moment when saving/reloading und Wayland
Product:	[Applications] kate	Reporter:	geisserml <geisserml>
Component:	application	Assignee:	KWrite Developers <kwrite-bugs-null>
Status:	RESOLVED DUPLICATE
Severity:	normal	CC:	bugseforuns, cullmann, geisserml, waqar.17a
Priority:	NOR	Keywords:	wayland
Version:	21.04.0
Target Milestone:	---
Platform:	Neon
OS:	Linux
Latest Commit:		Version Fixed In:

Description geisserml 2021-05-04 10:24:52 UTC

SUMMARY
The line numbers panel becomes transparent and flickers for a short moment when saving or reloading a file under Wayland.

STEPS TO REPRODUCE
1. Log in to a Wayland session
2. Configure Kate to show line numbers
3. Open some file
5. Trigger save (Ctrl+S) or reload (Ctrl+F5)

OBSERVED RESULT
The line numbers panel gets transparent for a short time. The window below is shining through. There might be visual artifacts like a short flickering.

EXPECTED RESULT
There should be no visual glitches in the line numbers area. The window below should never be visible.

SOFTWARE/OS VERSIONS
Operating System: KDE neon 5.21
KDE Plasma Version: 5.21.4
KDE Frameworks Version: 5.81.0
Qt Version: 5.15.2
Kernel Version: 5.4.0-72-generic
OS Type: 64-bit
Graphics Platform: Wayland
Processors: 4 × Intel® Core™ i5-3570K CPU @ 3.40GHz
Memory: 7.2 GiB of RAM
Graphics Processor: Mesa DRI Intel® HD Graphics 4000

ADDITIONAL INFORMATION
This issue is Wayland only and applies to all katepart-based text editors (kate, kwrite, kdevelop).
The described behaviour is annoying for people who tend to save files very often.

Comment 1 geisserml 2021-05-04 10:28:57 UTC

I might have reported this in the wrong product/component, so feel free to move the issue if you know a better place.

Comment 2 Patrick Silva 2021-05-31 11:30:00 UTC


*** This bug has been marked as a duplicate of bug 435361 ***