Since several month I experience a very strange behavior in thunderbird: From time to time, some of my IMAP folders I have subscribed to in thunderbird disappear. They simply are no longer subscribed. I can manually subscribe to these folders again and they are downloaded and available ... until suddenly they miss again. I did not figure out yet, when this happens.
It's always the same set of folders that disappear, some email archives on a shared account.
I'm currently using TB 45.7.0.
Did someone experince the same behavior in TB? I's appreciate any hints what the reason could be or how to identify the reason. Thanks!
advanced
button and uncheck box that says "Allow server to override these namespaces". I just guessing it is reset on a server side