And sorry for the odd title, I have no idea how to title this problem.
A work colleague is working in Excel on a Mac. She has been working on a spreadsheet, creating a timetable for an upcoming convention. We have been working on it togehter and sharing it by email (I work on a PC).
She opened it yesterday and there is a duplicate of the sheet over the top of the sheet and upside down. She opened it this morning to check, it was fine. But has just opened it again and the image is back.
It isnt doing it for me, i just get the normal view you would expect.
Has anyone experienced anything like it before? And, hopefully, solved it.