Bug 486669

Summary:	UI glitch when un-maximizing system monitor window: sidebar moves towards the center
Product:	[Applications] plasma-systemmonitor	Reporter:	git
Component:	general	Assignee:	KSysGuard Developers <ksysguard-bugs>
Status:	RESOLVED FIXED
Severity:	normal	CC:	ahiemstra, plasma-bugs-null, waqar.17a
Priority:	NOR
Version First Reported In:	6.0.4
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:
Attachments:	The UI glitch

Description git 2024-05-06 14:11:16 UTC

Created attachment 169239 [details]
The UI glitch

***
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***

SUMMARY
The UI glitches (see screenshot)

STEPS TO REPRODUCE
1. Maximize System Monitor app
2. Close System Monitor app
3. Open System Monitor app (it will now have remembered to be maximized)
4. Click and drag the top bar of the app such that it becomes un-maximized

OBSERVED RESULT
Sidebar is in the middle of the window, overlapping the content

EXPECTED RESULT
Sidebar remains at the side.


SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: KDE Neon 22.04 with all updates installed as of 2024-05-06
(available in About System)
KDE Plasma Version: 6.04
KDE Frameworks Version: 6.1.0 
Qt Version: 6.7.0
Graphics platform x11

ADDITIONAL INFORMATION
If the app is started non-maximized, the issue doesn't occur even if one maximizes and un-maximizes.

Comment 1 git 2024-09-12 10:28:28 UTC

I'm just confirming that this still happens on Plasma 6.1.5. Also, I'm bumping this issue as I think it's quite a significant glitch that is not too unlikely to occur. On a smaller screen, it's worse, as much more of the system monitor window becomes glitchy.

Comment 2 Arjen Hiemstra 2024-09-30 08:27:38 UTC

As it turns out, this only reproduces for me when dragging to unmaximize (not when using the titlebar buttons) and only when using XCB, not when using Wayland.

It seems something is ignoring size changes when dragging, which then causes Qt's layouting to break. I'm not sure if there's anything we can do about this is System Monitor, since neither the drag behaviour nor the layout is really under our control.

Comment 3 Arjen Hiemstra 2024-09-30 08:43:00 UTC

*** Bug 487226 has been marked as a duplicate of this bug. ***

Comment 4 git 2024-09-30 11:00:42 UTC

Thanks for looking into this. Interesting that the bug doesn't appear on wayland. If this bug is difficult to fix and is automatically fixed once one switches to wayland, I'd be fine with closing this. But it's up to you of course :)

Comment 5 git 2025-07-12 20:11:26 UTC

The issue seems to have been fixed in the meantime!