Bug 433346 - [Wayland] Scale effect: dark line between XWayland window borders and their contents
Summary: [Wayland] Scale effect: dark line between XWayland window borders and their c...
Status: RESOLVED WORKSFORME
Alias: None
Product: kwin
Classification: Plasma
Component: wayland-generic (other bugs)
Version First Reported In: 5.21.0
Platform: Other Linux
: NOR normal
Target Milestone: ---
Assignee: KWin default assignee
URL: https://drive.google.com/file/d/1vSUU...
Keywords: wayland-only
Depends on:
Blocks:
 
Reported: 2021-02-20 18:29 UTC by magiblot
Modified: 2022-03-19 04:35 UTC (History)
4 users (show)

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


Attachments
Link to video showing the issue (82 bytes, text/plain)
2021-02-20 18:29 UTC, magiblot
Details

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Description magiblot 2021-02-20 18:29:37 UTC
Created attachment 135983 [details]
Link to video showing the issue

SUMMARY

When opening or closing certain XWayland windows with the Scale effect enabled, the window borders are not drawn perfectly fit to the window's contents and a dark line may appear in between. The problem appears to go away if the window is maximized at least once.

The issue is made more obvious when the Scale effect is configured to be slower. Please see the attached video.

I am unable to reproduce the issue in a Plasma X11 session.

STEPS TO REPRODUCE
1. Have the Scale effect enabled in a Plasma Wayland session.
2. Run `QT_QPA_PLATFORM=xcb dolphin` so that Dolphin is ran as a XWayland client.
3. Press F10 in Dolphin to open the "New Folder" dialog. The dialog window will suffer from this issue.

SOFTWARE/OS VERSIONS

Operating System: Arch Linux
KDE Plasma Version: 5.21.0
KDE Frameworks Version: 5.79.0
Qt Version: 5.15.2
Kernel Version: 5.10.16-arch1-1
OS Type: 64-bit

ADDITIONAL INFORMATION

Thank you.
Comment 1 Nate Graham 2021-02-22 21:31:54 UTC
Window borders becoming de-synced from window content :/
Comment 2 postix 2022-02-17 13:46:28 UTC
Can you still reproduce it?

I could not reproduce it, having the "Scale effect" enabled on openSUSE TW with Plasma  5.24.0 on Wayland, following your instructions.
Comment 3 Bug Janitor Service 2022-03-04 04:35:43 UTC
Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least
15 days. Please provide the requested information as soon as
possible and set the bug status as REPORTED. Due to regular bug
tracker maintenance, if the bug is still in NEEDSINFO status with
no change in 30 days the bug will be closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

If you have already provided the requested information, please
mark the bug as REPORTED so that the KDE team knows that the bug is
ready to be confirmed.

Thank you for helping us make KDE software even better for everyone!
Comment 4 Bug Janitor Service 2022-03-19 04:35:05 UTC
This bug has been in NEEDSINFO status with no change for at least
30 days. The bug is now closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

Thank you for helping us make KDE software even better for everyone!