https://bugs.kde.org/show_bug.cgi?id=379790
--- Comment #14 from Hugo Pereira Da Costa <hugo.pereira.da.co...@gmail.com> --- Note that in the meanwhile I have tracked down the origin of the issue a little (and why it happens only in breeze and oxygen). It boils down to the fact that we draw shadows around the mdi subwindows (unlike other styles). These are realized with "invisible" widgets, which normally cannot received input events, and are hidden from the window stack. Now what happens when a style sheet is set, at least, is that these shadows become "not invisible" anymore, and break the window stack. They start receiving mouse events (and keywords), instead of the window on top of them. Hence the freeze. The thing that I have not found out yet is why this happens only after stylesheet is set (and possibly on other conditions), and why this happen to all shadows, including the ones for which no stylesheet is set. -- You are receiving this mail because: You are watching all bug changes.