TB 68.3.1 Following a problem with the current profile directory showing all of a sudden just zero accounts since for unknown reasons all the *mail dirs had been removed (and displaying a strange message related to enigmail) I tried to recover from a recent backup of this profile, using about:profiles, create profile, etc Then opening this profile in a new TB instance showed all accounts and associated folders Closing TB and reopening it showed all accounts but only an empty inbox folder per account, as if the first opening did corrupt something in the backup profile, but the *mail dirs are there and the global size of the profile is coherent, I tried several times with different backup at different dates of the profile, always the same, gets corrupted at second opening I have searched here and in many places what could happen but did not find how to solve it, thanks if you have any idea