Version 16.0.1 x64
Working on an existing document. Nothing out the the norm. Just basic single-user InDesign. Upon save, it said the "document needed to be repaired and some unsaved changes might be lost". Well it lost everything and I lost 2 hours of work. I think InDesign is becoming like the old Quark XPress where you had to hit Ctrl-S like a rabid monkey to save your work from loss.
It might be just like this forum "Post Idea" it says you're not logged in, and then you lose everything you typed.
The other thing is lately InDesign crashes on startup.