Created attachment 105974 [details] context menu over two monitor on three positions If I press right button mouse at right limit of my right monitor (vertical layout) and the context menu have not enought space the menu is completed on the left monitor, in it extrem right, and the next level of context menu appear in the right monitor again, ... is too much complicate to use this menues. I taken a screenshot.
This is a Qt bug, sorry. https://bugreports.qt.io/browse/QTBUG-53813