Hi Wayne,
The biggest problem with this issue is that we still don't have a way to reproduce the problem in a controlled environment.
Nobody has been able to give us a situation where it is "Do these steps", then "Database is corrupted".
We believe we understand the change in Windows that caused the increase in corrupted databases, and have been testing changes that we hope will alleviate the problem in production. Initially, that will be for O365 Monthly Channel users. It will not necessarily
address all the issues, particularly in environments with users using different versions (if someone using Access 2016 corrupts the database, it may still be reported as corrupt when it is opened in Access365).
I am not suggesting this as a workaround, because I know it isn't a trivial transformation, but if this is causing you significant issues, it is worth considering using Access for the front end, and storing data in SQL Server.
We will share more information when we have it, but I don't want to make promises we can't deliver on.