[mkopinsky]

I last changed my master password in 2019, and it gave me the option to revert to previous password. So it's not just a 30 day thing.

[znep]

That is concerning and directly contradicts the docs:

"You can revert to your previous master password only if the change had taken place within the last 30 days."

I guess it is possible it is another UX issue and would fail if you tried, but that still isn't very reassuring.