Bug 499256 - Resize issues when a placement policy/rules sets a non-maximisable window to maximised
Summary: Resize issues when a placement policy/rules sets a non-maximisable window to ...
Status: CONFIRMED
Alias: None
Product: kwin
Classification: Plasma
Component: wayland-generic (other bugs)
Version First Reported In: 6.2.5
Platform: Other Linux
: LO normal
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords: wayland-only
Depends on:
Blocks:
 
Reported: 2025-01-28 21:44 UTC by Alberto Salvia Novella
Modified: 2025-12-16 21:47 UTC (History)
5 users (show)

See Also:
Latest Commit:
Version Fixed/Implemented In:
Sentry Crash Report:

Attachments
Screenshot (63.99 KB, image/png)
2025-01-28 22:29 UTC, Nicolas Fella 		Details
stderr.txt (42.94 KB, text/plain)
2025-01-29 17:16 UTC, Alberto Salvia Novella 		Details
Record.mkv (1.15 MB, video/x-matroska)
2025-01-29 22:29 UTC, Alberto Salvia Novella 		Details
View All Add an attachment

Note You need to log in before you can comment on or make changes to this bug.
Description Alberto Salvia Novella 2025-01-28 21:44:37 UTC 
SYSTEM
- Zenned (Arch Linux customized)
- plasma-desktop 6.2.5-1
- qt6-base 6.8.1-1
- mate-calc 1.28.0-2 (https://archlinux.org/packages/extra/x86_64/mate-calc/)

STEPS
1. Log into plasma using the Wayland session.
2. Launch mate-calc.

RESULT
- mate-calc is unusable.
- The window lacks decorations. No borders and such.
- If you move the window around, the animation is very choppy.
Comment 1 Nicolas Fella 2025-01-28 22:29:40 UTC 
Created attachment 177780 [details]
Screenshot

Seems fine here
Comment 2 Alberto Salvia Novella 2025-01-28 22:31:54 UTC 
System?
Comment 3 Vlad Zahorodnii 2025-01-29 13:44:12 UTC 
Can you run mate-calc with WAYLAND_DEBUG=1 environment variable and post the output here? Please reset the bug report status back to REPORTED after providing the requested information.
Comment 4 Alberto Salvia Novella 2025-01-29 17:16:10 UTC 
Created attachment 177793 [details]
stderr.txt
Comment 5 Vlad Zahorodnii 2025-01-29 17:22:07 UTC 
Okay, mate calc appears to create a decoration. Can you share a screenshot to give a glimpse of how mate-calc is broken?
Comment 6 Alberto Salvia Novella 2025-01-29 22:29:08 UTC 
Created attachment 177802 [details]
Record.mkv
Comment 7 Vlad Zahorodnii 2025-01-30 10:41:51 UTC 
Hmm I cannot reproduce the issue. If you move the window by using Meta+LMB, is there any difference?
Comment 8 John Kizer 2025-02-05 20:12:47 UTC 
Updating status pending a response to Vlad's last comment
Comment 9 Alberto Salvia Novella 2025-02-06 01:11:07 UTC 
No difference.
Comment 10 Alberto Salvia Novella 2025-12-16 11:21:57 UTC 
This affects any window that is non-resizable.

I see the same problem with displaycal dialogs.
Comment 11 Alberto Salvia Novella 2025-12-16 11:22:51 UTC 
Let me bisect this...
Comment 12 Alberto Salvia Novella 2025-12-16 11:45:23 UTC 
I have found the culprit.

On (System Settings -> Window Behavior -> Advanced) set "Window placement" as "Maximized".