Menu Navigation not working with Left/Right arrows (behave like Up/Down arrows)

[jmwmusic]

Issue type

UI bug

Bug description

When using keyboard navigation in menus the left/right arrows do not open the next menu.

Steps to reproduce

1. Press Alt F to open the file menu.
2. press a few down arrows to an option that does not have an expand (e.g. not open recent).
3. Press right arrow.
   Expected behaviur is for it to move focus onto and open the next menu so you should year Edit/Undo. Instead it moves down the next item in the file menu and then gets somewhat stuck.

Screenshots/Screen recordings

No response

MuseScore Version

4.1

Regression

I don't know

Operating system

Window 10 with NVDA

Additional context

No response

[bkunda]

@DmitryArefiev pls look at this one

[NinjaNas]

I would like to take this issue but I would need more info about the expected behavior.

For example, when you use right arrow in a submenu on an option that does not have an submenu should it move directly to the next app menu?

[shoogle]

@NinjaNas, judging by the behaviour of MS Paint and Notepad, no, pressing Right in a submenu should not take you to the next top-level menu. However, it does in Firefox, so I'd say that it doesn't really matter either way. The main thing is that pressing Right in a top-level menu should take you to the next top-level menu.

[NinjaNas]

@shoogle I just tested this out in Notepad and it does take you to the new top-level menu.

Alt + V, then Right Arrow twice should put you into the Zoom submenu and then to the Help menu.

I personally think it should go to the next top-level menu, otherwise Right Arrow has the the same functionality has Down Arrow in this case.

[shoogle]

@NinjaNas, I'm on Windows 11 and my Notepad doesn't have a Help menu. Maybe you're on Windows 10 or using Notepad++?

Anyway, in Notepad on Windows 11 the Right arrow key behaves as I described (i.e. it does nothing in submenus), though like I said before, I don't have a problem with it putting you on the next menu.

The Right arrow shouldn't behave like the Down arrow in menus. It should either put you on the next menu or do nothing. It shouldn't put you on the next item in the current menu.