This workaround works for me: sudo apt install qt5-style-plugins echo "export QT_QPA_PLATFORMTHEME=gtk2" >> ~/.profile
Not fixing this bug in Ubuntu means that all QT5 Applications will looks 80s. https://bugs.launchpad.net/mixxx/+bug/1789113 Effected Apps are qBittorrent VLC Virtualbox Mixxx ... In the Mixxx project, we like to offer our user the best experience and polished view. Hacking magic commands to the terminal should not be a part of that. I think we can also not add that to our install scripts because of the different ubuntu flavours. Do you have any ideas what can be the solution to fix this regression? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1695618 Title: Include qt5-style-plugins into the default installation, otherwise Qt5 apps don’t pick up the GTK+ style To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qtbase-opensource-src/+bug/1695618/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs