https://bugs.kde.org/show_bug.cgi?id=379790
--- Comment #8 from Hugo Pereira Da Costa <hugo.pereira.da.co...@gmail.com> --- Created attachment 105543 --> https://bugs.kde.org/attachment.cgi?id=105543&action=edit another ui file with mdi windows, that work Can you test this ui locally (it has mdi windows, no stylesheet) Here nothing is frozen (which is why I reported that I cannot reproduce in the first place) If confirmed that neither oxygen-demo5 nor this ui are frozen, it means that there is something specific to the ui you sent that makes the freeze happen. That could be a good base for further investigations -- You are receiving this mail because: You are watching all bug changes.