Since the very recent update to Questie-v8.3.0 in WotLK classic I get an info window stuck to my pointer very often (I never intentionally opened that window).
(Pressing Shift after hovering over the question mark to the left of "Questie Tracker: x/25" shows that same menu but it instantly closes when not hovering the question mark anymore.) Just before I submitted this it changed and doesn't show up at the question mark anymore, now it's only visible when hovering over the bottom resize triangle then pressing Shift.
I'm not able to reproduce the issue of it getting stuck to my pointer on purpose.

dont think so but i do have other addons.
questie was the only update since the last session before that started happening iirc.

Do you maybe have some tooltip addons messing with it?