gitlab-ui dropdown doesn't support tabbing properly
The following discussion from !8591 (merged) should be addressed:
@winh the tabbing behavior seems a bit weird. I can't seem to tab through the list items:
Am I doing something wrong?
@winh: I agree that this is weird behavior and my guess is that it's caused by the scroll fade wrapper. It looks like bootstrap-vue steps outside the dropdown when pressing tab (so only arrow keys navigate between dropdown items). would that work for you?