Got biten by this bug. One time after more than a decade of Thunderbird use. The mails were still on the server but having to create a new profile and redownlo

Got biten by this bug. One time after more than a decade of Thunderbird use. The mails were still on the server but having to create a new profile and redownload everything and retrain the spam filter was not fun. It is not what I'd call an intermittent issue: it is a black swan. Happens very rarely but with huge consequences for the user. If it happens a second time thunderbird is being uninstalled and put on a blacklist of software to avoid.