Unfortunately, you do not tell us how you noticed this behaviour and which options you looked through.
So, as a wild guess: could this thread help you?
Hi Florian,
Thanks for the greatly useful app. It's a perfect app to organize tag for my music library.
I have an issue with the app when using it on my second Macbook, though.
When trying to edit any metadata, it's said that I can't access the file on my external hard drive. I already gave Mp3Tag full disk access on Security & Privacy.
When searching here, I found someone had the same issue and solved with "defaults delete app.mp3tag.Mp3tag SecurityScopedBookmarks" in Terminal app.
I tried…