A selected window appears twice on the desktop grid when the cursor hovers the current workspace of this window. It happens only on a X11 session. Screenshot: https://i.imgur.com/aZHosiz.jpg STEPS TO REPRODUCE 1. Go to the desktop grid 2. Select a window 3. Move it but keep the mouse cursor above the workspace of this window OBSERVED RESULT The window is displayed twice, one below the mouse cursor and a second one on the workspace miniature. EXPECTED RESULT The window is only displayed once, below the mouse cursor SOFTWARE/OS VERSIONS ArchLinux KDE Plasma Version: 5.15.0 KDE Frameworks Version: 5.55 Qt Version: 5.12.1
Please upload the screenshot to this bug report. Please provide the output of qdbus org.kde.KWin /KWin supportInformation
Created attachment 118138 [details] screenshot of the issue
Created attachment 118139 [details] "qdbus org.kde.KWin /KWin supportInformation" output Provided the requested output as attachment
Argh, this is yet another regression caused by virtual desktop patches.
Git commit 55d3f2933f3735958dfa0f99e6d28e02cd083576 by Vlad Zagorodniy. Committed on 18/02/2019 at 14:27. Pushed by vladz into branch 'Plasma/5.15'. [effects/desktopgrid] Don't copy windows on X11 Summary: Currently, the Desktop Grid effect tries to copy a client when user moves it. But on X11 such behavior doesn't make sense because a client can't be on multiple desktops (except on all). FIXED-IN: 5.15.1 Reviewers: #kwin, davidedmundson Reviewed By: #kwin, davidedmundson Subscribers: kwin Tags: #kwin Differential Revision: https://phabricator.kde.org/D19116 M +1 -1 effects/desktopgrid/desktopgrid.cpp https://commits.kde.org/kwin/55d3f2933f3735958dfa0f99e6d28e02cd083576