Long OOUI dropdowns stop responding to mouse cursor after operating them with keyboard.
Steps to reproduce:
- Visit a page with a long dropdown (long enough to require scrolling), for example:
- Open the dropdown
- Do something using the keyboard that requires it to be scrolled a lot, for example:
- type to search very fast
- press and hold the down arrow
Afterwards, the dropdown items will no longer be highlighted when you hover them with the mouse pointer. (Clicking them still works.)