Description:
While viewing a file distributed from work, after a few minutes a dialogue pops up prompting me to "Re-type Password" as "The document you are about to export has one or more protected items with password that cannot be exported". Two elements under "Sheet Protection" show up as "Hash incompatible".

I'm not trying to do anything but view the file and use its equations for some calculations.

Once this message pops up, it cannot be dismissed and the program must be killed and restarted to continue my work.

Unfortunately I cannot share the file which triggers the bug, though I would expect it could be replicated by adding sheet protection to a file with a password and reloading the file without entering the password, then filling out some fields in the sheet (I am assuming this is triggered by auto-save)

Steps to Reproduce:
1.Load sheet protected file which uses a password
2.Edit some cells, but do not attempt to save
3.Wait for ~5 minutes
4.Re-type Password dialogue appears

Actual Results:
A dialogue appears which re-appears immediately on being dismissed

Expected Results:
Dismissing the dialogue should prevent further attempts at autosaving?


Reproducible: Always


User Profile Reset: Yes

Additional Info:
I assume this is due to autosave & sheet protection, but I don't have time to build a full repro case as well, sorry!