https://bugs.kde.org/show_bug.cgi?id=363812
--- Comment #2 from arne anka ---
looks like it is caused by that non-good kactivities:
on another machine i have a folder view configured which is gone after the same
update ... but the "Add widget" popup still shows it as
https://bugs.kde.org/show_bug.cgi?id=363812
--- Comment #1 from arne anka ---
that's what i see when clicking the taskbar entry.
the issue persists even after reboot
QXcbConnection: XCB error: 8 (BadMatch), sequence: 52951, resource id:
50331653, major code: 42