Oauth is not a password as such, it is a series of tokens issued by the server that allow access. These are saved in the password manager as oauth:// entries, but they have no functional use to you at all other than to delete them and force a new oauth authentication process asking for your password. So if you rely on the password manager to save you actual password, I suggest you look for a new solution as Thunderbird no longer saves the password you enter into the oauth authentication process as it serves no function beyond the initial authorization.

Thanks, yes I can see the "tokens" now I know what to look for, one for each account in password manager, but why are they sometimes "applied" and other times "ignored". Seems very random. Note it is only the Microsoft accounts and since changing to Oauth that the annoyance has presented, Gmail accounts don't suffer the same. Cheers Paul