Priority: P1: Critical
Affects Version/s: 5.5.0 RC
Fix Version/s: 5.5.1
Component/s: Widgets: Main Window
Environment:Arch Linux, 64bit, plasma 5 desktop. Happens also in chroot without any desktop environment set up.
Commits:0636ec4ff5d25845b4020358d0570afb92ce580c (qtbase/5.5, 17.8.2015, 5.5.1)
Build Examples/Qt-5.5/widgets/mainwindows/menus using the Qt 5.5 packages (64bit Linux). I used the ones from 2015-06-24_10-44-07.
Run the menus executable.
Move the mouse to hover over the "File" menu entry. Do not move the mouse again to reproduce this issue.
Click on "File" in the menu. "File" menu item is highlighted and the "File" menu opens. (expected)
Click on "File" again. The File menu again and the "File" menu item looses the highlighting. (expected)
Click on "File" again. The "File" menu item gets highlighted again. The File Menu is NOT shown. (BUG).
Click on "File" again. The File menu is now shown. (BUG).
There are other ways to trigger this "Click-twice" bug, but this way works 100% reliably for me.