My handwritten comments "sliding" when I return a document in Teams

Hello!

I'm a teacher and whenever I make annotations with my stylus in Word, then return the document to my students, the handwriting moves around (it kind of "slides") and doesn't match the specific area I wanted to circle anymore.

I can't find any help about this issue online, like it doesn't seem to exist :o)... Anyone has a clue? The only thing that works is if I import the Word doc to a OneNote page, but that's a hassle...