[alex40724]

This PR is adressing mainly https://mantis.ilias.de/view.php?id=48131, but also other focus issues.

Other issues being adressed:

• When entering a slate submenu using keyboard tabs and subsequently walking backwards using shift-tab the focus does not end up in the initial main menu entry. It is always moved to the end of the main menu instead.
• On some elements, e.g. tabs, the focus frame is shown "on-click". This is not necessary, the focus is being used for keyboard tab navigation.
• The use of border for the focus makes glyphs or text move inside buttons or links sometimes. An outline-only variant prevents this.

Open Issue: Tab on Main Menu should open first entry.

[Annett7811]

Hello @alex40724!

Thank you very much for the PR and the improvements to focus control and keyboard navigation!

From my perspective, the changes described make a lot of sense, especially the correct back navigation with Shift+Tab, the distinction between mouse and keyboard focus, and the use of outline instead of border to prevent layout shifts.

In my opinion, one more improvement would be desirable: When navigating with the keyboard, pressing the Tab key to enter the main menu should first focus on the first menu item.

I would appreciate it if this could be included in this PR, as it is directly related to the improvements made to focus control and contributes to consistent keyboard navigation.

Otherwise, I think the changes are very welcome. Thank you very much for implementing them!

Best regards
@Annett7811

[alex40724]

Hello @Annett7811,

thank you very much for your valuable feedback. I added this change.

Best regrads,
Alex