After page deletion form was migrated to OOUI, the tab index was broken.
My workflow as Wikipedia admin when deleting a page is usually like this:
- Press Alt+Shift+D (or just choose delete for a page)
- Choose Deletion reason
- Press ⇥ to jump to summary and clear possible profanity
- Press ⇥ twice and ⏎ to delete the page.
Now on step 3 it jumps to "mw-delete-editreasons" element. Also initially selected input element is deletion reason text box, not dropdown.