Annoying popup every time I open a Word document

AndreTen said:

No, I don't have that option. Maybe it's something Office 2019 bring up. There was some announcements about new collaboration options lately, but don't have them atm
Maybe you could turn it off too?

I'm indeed aware that it can be turned off. What I'm suspcicious about though is why Office is thinking others are editing my personal documents in the first place, while at the same time it's only showing my name on the editing list when clicking the Share button.

Something peculiar that I noticed is that this is not the case for every OneDrive document that I have. And for the ones that do, moving the document to my local PC storage and then moving it back to OneDrive makes the popup not appear anymore in that document.

I have quite a lot of documents so checking this one by one is not practical. Curious what the cause might be.

Scratch that, the popup still comes up even after moving it to the local harddrive and back again.

I have no idea what might be causing this.