today we were working with excel online and our add-on, helping us to support the document structure (it is able to add/remove lines, color cells ..)
after some time document became broken, and the state was strange:
the one person who was editing it was able to continue his work
others were not able to open the document.
then I did check version history and found, that corruption happens 15 version ago
recovering was not possible - I was able to download the document and open it in local excel, it reports about corruption and even fixes it, but
after saving a good copy and reopening the good copy the document still was 'corrupted'.
what is totally not comfortable - only the Administrator can do something about it, because he is able to access file versions in Sharepoint OneDrive. Other users can access the file by link and can do nothing
what could happen with my document? how we can avoid or control it?