(In reply to Marcel Kuehlhorn from comment #19) > Created attachment 819630 [details] > Fallback theme > > > A quick question: which Cinnamon package hard depends on libqt5-qtstyleplugins-platformtheme-gtk2? > > > ~> zypper se --requires libqt5-qtstyleplugins-platformtheme-gtk2 > > S | Name | Summary | Type > > --+-----------------------------+----------------------------------------------+-------- > > | cinnamon-session | The session manager for the Cinnamon Desktop | package > > | libqt5-qtstyleplugins-devel | Qt 5 Style Plugins Development Files | package > > | mate-session-manager | MATE Session Manager | package > > > Also, what do you mean by "QT apps on GTK falling back to the GNOME default > > theme"? My understanding of setting GTK3 as the first will result in QT apps > > on GTK3 falling back to GTK3 theme, which is correct behavior. > > If you look at this Screenshot, you notice that Keepass falls back to the > default theme instead of using the GTK3 version of the set theme Then I believe the problem is why the theme falls back to default instead of using the GTK3 version even though the theme in Qt is set to "GTK3". It shouldn't be GTK2 related anyway.