Created attachment 112329 [details] "after" the commit This started a couple weeks ago. I've tracked the issue down to specific commit: https://phabricator.kde.org/D11098 before the commit vertical tabs are working as expected, but after the commit first tab is not fully visible when kickoff is opened for the first time. Clicking on any other tab (or hovering mouse if "Switch tabs on hover" is enabled) forces the tab to slide down back into place (the kickoff popup can be closed/reopened but the issue persists until any other tab is activated). P.S. Horizontal tabs are working as expected both before and after the commit.
Created attachment 112330 [details] "before" the commit
Can reproduce this bug also on Wayland - both in left and right panel positions Operating System: KDE neon Developer Edition KDE Plasma Version: 5.14.80 Qt Version: 5.11.1 KDE Frameworks Version: 5.51.0 Kernel Version: 4.15.0-34-generic
*** Bug 398423 has been marked as a duplicate of this bug. ***
*** This bug has been marked as a duplicate of bug 395390 ***