when I right click the titlebar in kwin 5.4.1, the context menu doesn't go away when i click elsewhere in the same window. The context menu used to get automatically dismissed if I click elsewhere in the same window under kwin 4.x so it is a regression. Reproducible: Always
No, it's a bug - and likely in Qt5 (but we do not have the slightest idea "why") *** This bug has been marked as a duplicate of bug 351112 ***