[kde] [Bug 486936] New: Windows size changes after standby (Wayland)

[Velent]

https://bugs.kde.org/show_bug.cgi?id=486936

            Bug ID: 486936
           Summary: Windows size changes after standby (Wayland)
    Classification: I don't know
           Product: kde
           Version: unspecified
          Platform: Arch Linux
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: unassigned-bugs at kde.org
          Reporter: velent0 at proton.me
  Target Milestone: ---

Created attachment 169407
  --> https://bugs.kde.org/attachment.cgi?id=169407&action=edit
Logs at the moment of display's sleep and unlocking

SUMMARY
When the display turns off, and some time passes (under 15m), usually some
application windows are being squished into small sizes, also some in-app
panels might change its sizes too. This happens only Wayland session. X11
doesn't have such issue.

STEPS TO REPRODUCE
1. Open some windows
2. Place and resize them as you wish
3. Wait / manually lock screen and wait for it to turn off

OBSERVED RESULT
After unlocking the screen, windows are squished and displaced.

EXPECTED RESULT
After unlocking windows retain their sizes and positions.

SOFTWARE/OS VERSIONS

Linux: Arch Linux
KDE Plasma Version: 6.0.4
KDE Frameworks Version: 6.1.0
Qt Version: 6.7.0

ADDITIONAL INFORMATION
As this issue didn't get reported and (probably) related issues do have low
activity, I assume it might be related to the bug, that affects only some
hardware and previously caused https://bugs.kde.org/show_bug.cgi?id=452553. 
https://invent.kde.org/plasma/kwin/-/merge_requests/2940

Previously I reported this to https://bugs.kde.org/show_bug.cgi?id=482875, but
only now I realized that this is not exactly the same issue, so I decided to
report it separately. (However, they might be related.)

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