Bug in KMultiTabBar breaks Kate's sidebar

[Kåre Särs]

Hi,

I just updated my KDE Neon to KF5 5.42 and the sidebars in Kate stopped 
working properly. The bug is in KWidgetsAddons  5.42 (fixed in master). So do 
not use that version of KWidgetsAddons together with Kate. 

Where else should we inform about this?

(https://phabricator.kde.org/D9884)

Regards,
  Kåre