Bug 389053

Summary: Graphical glitches with Webkit renderers on Wayland
Product: [Plasma] kwin Reporter: Marcus Harrison <marcus>
Component: wayland-genericAssignee: KWin default assignee <kwin-bugs-null>
Status: RESOLVED DUPLICATE    
Severity: normal CC: kde, pavbaranov
Priority: NOR    
Version: unspecified   
Target Milestone: ---   
Platform: Neon   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description Marcus Harrison 2018-01-16 14:03:27 UTC 
This applies to the E-mail view in Kontact, the new System Settings layout and the Discover view. Sorry if this bug is mis-filed.

When using these applications on Wayland using the KDE Slimbook, they will often distort the display outside of the application. This includes drawing the application view outside of the application's window or drawing it on top of applications that overlap them in the window manager.

This does not affect Xorg sessions.

When those applications listed above are closed, the distortion ends.

I am using mesa on intel graphics and this happens every time.
Comment 1 Pawel 2018-01-22 14:29:41 UTC 
The same on Arch with KF5.42, Plasma 5.11.95 and amdgpu for Radeon R5
Comment 2 Kai Uwe Broulik 2018-01-22 16:37:08 UTC 
Most likely Qt's broken subsurface handling
Comment 3 Martin Flöser 2018-01-22 18:34:16 UTC 
No, it's a bug in KWin.

*** This bug has been marked as a duplicate of bug 387313 ***