Enter a wiki with VE and ULS. (Enable ULS in preferences if needed.)
Start editing a page using VE. Press the headings style dropdown.
Observed: IME selector appears near the dropdown.
Expected: IME selector must not appear. It's not a place for writing things.
Background: there's an <input> element hiding there to capture click events (according to Roan).
https://gerrit.wikimedia.org/r/#/c/68339/ may be able to fix it (though some modifications may be needed).