https://bugs.kde.org/show_bug.cgi?id=420980
Bug ID: 420980
Summary: Keyboard navigation faulty in app menu decoration
integration
Product: kwin
Version: 5.18.4
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: appmenu
Assignee: kwin-bugs-n...@kde.org
Reporter: samj...@gmail.com
Target Milestone: ---
I'm using KWin 5.18.4.1 from Kubuntu Focal. This is the first time I'm getting
exposed to the integration of the App Menu into the decoration since I'm
upgrading directly from Bionic. I have not installed any global menu widget.
I find that the keyboard navigation for the app menu is seriously faulty. I
give examples using the simple basic app Kate.
1) If I open the App Menu by clicking on the decoration button using the mouse,
I am able to use Up/Down to navigate among File, Edit etc. I am also able to
use Right to enter a submenu.
2) If I once enter one of these submenus from the above step, or if I directly
do Alt+F etc to go to these submenus, I can similarly navigate Up/Down or enter
further submenus. For instance, in File, I can go under Open Recent.
3) However I cannot go back to a parent menu/submenu at any stage by using
Left.
a) If I try to do that from a sub-sub-menu like Open Recent, the whole menu
is exited and the focus goes back to the application wherever it was.
b) If I try to do that from within a top-level sub-menu like File, I am
brought back to the top-level menu but unable to use Up/Down to navigate
between File, Edit etc as before. Even Esc doesn't enable one to exit the menu.
It is effectively frozen for normal navigation.
c) Surprisingly, pressing Alt+Tab or Alt+BackTab at this point enables one
to navigate instead. If once we press either of these two then normal
navigation of Up/Down or Esc is restored.
At all points of time, mouse navigation of the menu/submenus works fine AFAICS,
but this doesn't help people like me who are devoted to the keyboard.
For now I'm switching off the in-decoration app menu due this serious usability
problem. Doing so also doesn't seem to awaken all apps immediately to restore
their regular menu bars, but that's a separate problem.
I hope this can be fixed.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Kubuntu Focal
(available in About System)
KDE Plasma Version: 5.18.4.1
KDE Frameworks Version: 5.68.0
Qt Version: 5.12.8
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