I just fixed this in KDE Partition Manager git. Running KDE Partition Manager in Plasma session should result in Breeze theme (or whatever is configured) being used.
This was cause by kdesu using sudo on Kubuntu. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1431061 Title: KDE Partition Manager theme is old To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/partitionmanager/+bug/1431061/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs