Version: (using KDE KDE 3.96.0) Installed from: SuSE RPMs Okular offers in the settings menu an action to hide its menu bar (standard shortcut is Ctrl-M). After hiding the menu bar by toggling this action, I cannot get it back again, i.e. Ctrl-M does not work. Also, many, if not all, other shortcuts are unfunctional (tested with Ctrl-O and Ctrl-F). Seems like the KActionCollection is sort of unbound from the user interface and does not recieve any keyboard events.
It seems like this was stored as a wishlist item, but it should be a bug.
Its real cause is the same of #151421. *** This bug has been marked as a duplicate of 151421 ***