Bug 441676

Summary:	Resizing the left panel is jerky
Product:	[Applications] okular	Reporter:	geisserml <geisserml>
Component:	general	Assignee:	Okular developers <okular-devel>
Status:	RESOLVED DUPLICATE
Severity:	normal	CC:	geisserml
Priority:	NOR
Version First Reported In:	21.08.0
Target Milestone:	---
Platform:	Neon
OS:	Linux
See Also:	https://bugs.kde.org/show_bug.cgi?id=427913
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description geisserml 2021-08-28 20:23:12 UTC

SUMMARY
In case you haven't noticed yet, resizing the left panel of Okular (which contains preview images, annotations, bookmarks, the outline, and layers) is super laggy since quite some time, I believe at least since two stable releases.

STEPS TO REPRODUCE
1. Open Okular, ideally with a PDF file.
2. Expand the left panel (F7), in case it is currently hidden
3. Try to resize the panel.

OBSERVED RESULT
Resizing the panel is jerky.

EXPECTED RESULT
The panel should resize smoothly, like any other panel does.

SOFTWARE/OS VERSIONS
Operating System: KDE neon 5.22
KDE Plasma Version: 5.22.4
KDE Frameworks Version: 5.85.0
Qt Version: 5.15.3
Kernel Version: 5.11.0-27-generic (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
I'm surprised that apparently no one has noticed the issue yet? It's super obvious.

Comment 1 geisserml 2021-09-10 19:53:34 UTC

Ping. :)

Comment 2 geisserml 2023-01-14 19:19:50 UTC

Bug 427913 mentions config file writes on any movement as possible cause, so maybe users with faster disks don't experience this as much...

*** This bug has been marked as a duplicate of bug 427913 ***