Bug 465736

Summary: Windows occasionally overlap when resizing both at once
Product: [Plasma] kwin Reporter: dev
Component: Custom TilingAssignee: KWin default assignee <kwin-bugs-null>
Status: ASSIGNED ---    
Severity: normal CC: nate, notmart, postix
Priority: NOR    
Version First Reported In: 5.27.0   
Target Milestone: ---   
Platform: Other   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description dev 2023-02-15 00:47:20 UTC 
SUMMARY
Dragging between two tiled windows, to resize them, does not correctly resize the windows 100% of the time.

STEPS TO REPRODUCE
1. Tile two windows next to each other
2. Drag the space in between them, such as to resize them

OBSERVED RESULT
Occasionally, the windows won't resize correctly, and begin to overlap.

EXPECTED RESULT
The windows should resize properly to neatly fit next to each other.

SOFTWARE/OS VERSIONS
Operating System: Arch Linux 
KDE Plasma Version: 5.27.0
KDE Frameworks Version: 5.103.0
Qt Version: 5.15.8
Kernel Version: 6.1.12-arch1-1 (64-bit)
Graphics Platform: X11
Processors: 8 × 11th Gen Intel® Core™ i7-1165G7 @ 2.80GHz
Memory: 15.4 GiB of RAM
Graphics Processor: Mesa Intel® Xe Graphics
Manufacturer: LENOVO
Product Name: 20W6S04X00
System Version: ThinkPad P15s Gen 2i
Comment 1 dev 2023-02-15 00:51:08 UTC 
I recorded a video of the bug, but the attachment upload failed, so its now unlisted on youtube: https://youtu.be/fFwnCtKw6Sk.

Notice as well there appears to be visual glitching on the right hand side of the screen.
Comment 2 Marco Martin 2023-02-15 09:31:14 UTC 
X11 or Wayland?
Comment 3 dev 2023-02-16 03:16:29 UTC 
(In reply to Marco Martin from comment #2)
> X11 or Wayland?

X11. I might also note that I am working on a two monitor setup, if that would make any difference.
Comment 4 Bug Janitor Service 2023-02-16 13:43:20 UTC 
A possibly relevant merge request was started @ https://invent.kde.org/plasma/kwin/-/merge_requests/3613
Comment 5 postix 2023-03-14 15:00:17 UTC 
(In reply to Marco Martin from comment #2)
> X11 or Wayland?

Can reproduce it also on Wayland (openSUSE TW, 5.27.2).