Bug 393750

Summary: Firefox breaks KWin / Aurorae
Product: [Plasma] kwin Reporter: Mircea Kitsune <sonichedgehog_hyperblast00>
Component: decorationsAssignee: KWin default assignee <kwin-bugs-null>
Status: RESOLVED NOT A BUG    
Severity: normal CC: sonichedgehog_hyperblast00
Priority: NOR    
Version: 5.12.4   
Target Milestone: ---   
Platform: Other   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:
Attachments: Screenshot of the broken Firefox window

Description Mircea Kitsune 2018-05-02 01:51:31 UTC
Created attachment 112364 [details]
Screenshot of the broken Firefox window

Firefox is interfering with KWin after an update in openSUSE Tumbleweed roughly a few hours ago. All other applications (including Thunderbird) work fine, but when I startup Firefox its window has no borders whereas the titlebar appears gray. The window can also not be resized, it can only be minimized / restored by dragging it from and to the screen edges.

I'm attaching a screenshot of the broken FF window. The gray titlebar is NOT the theme I'm currently using (Aurorae), and I have no idea what skin the buttons to its upper-right are from either. KWin should not be allowing applications to have custom window managers, this might be an issue with some fundamental library.
Comment 1 Martin Flöser 2018-05-02 04:32:42 UTC
Firefox started to use client side decoration. This decoration is not done by KWin, it's Firefox. Please report to Mozilla.