I have lost the ability to resize the Firefox (V.59.0.2) window in Tumbleweed (20180502).
I can not “pick-up” an edge or use the title bar Max/Resize button (see attached image for unusual display)
Works fine in Leap 15?
See https://forums.opensuse.org/showthread.php/530927-Firefox-breaks-KWin-Aurorae .
It’s actually a bug in the latest Firefox, it uses CSD (Client-Side window Decorations) also in a Plasma session.
A fix is on the way (will be in the next Tumbleweed snapshot together with Firefox 59.0.3), but you can also manually disable it by setting an environment varible as described in that other thread or in https://lists.opensuse.org/opensuse-factory/2018-05/msg00028.html .
Yet again! All the answers…