Excel document hidden in the corner
I have 5 Excel documents that were migrated from a previous MacBook Pro to my new Mac Book Air. I have download Microsoft Office 365 on the new Mac. When I open each of the above mentioned documents, they barely show up in the lower right corner of my screen. By barely, I mean almost 1 mm is visible. I can grab it and drag it to a usable location but I would like to know why this is happening and how to stop it. Thanks for any help.
MacBook Air (2018 or later)