Header Submenus

Issue: No vertical scrolling on desktop

If there are many submenu items and the list is longer than the desktop screen, you can’t access the lower items. Vertical scrolling works on mobile, though.
Since only ~2 menu items fit horizontally on a mobile screen (depends on the title length), I added a lot of submenu items per menu item. But now the lower ones can’t be accessed on desktop.
Tested in Firefox and Chrome (Win 11)

Issue: Menu doesn’t close after clicking on an open-in-same-tab-item

This is problematic esp. on mobile: When the menu covers the whole screen, I have to click into the free area in the top right next to the menu items to close it. (what if there’s no free area?) This also means I don’t get any feedback that the link worked since the menu still covers the screen. Clicking on the menu title won’t close it.