In Thunderbird 68.11.0 (64 bit) folder names that contain localized or special chars no longer work
This folder/dir used to work fine a few weeks/months ago... So I suspect an update to thunderbird or one of the plugins broke folders with non ASCII chars in name - or something like that.
The folder name that misbehaves contains chars like „â”, „î”, „()” and spaces.
Now it doesn't show messages, it shows the folder twice but I can't move messages in or out of it (at some point it had 2 messages from many shown but always unread and trying to read them gave an error message). I did try properties/repair folder on those 2 duplicates - but then even the 2 messages that were showing before in the list (but that I couldn't see the content of) dissapeared.
Now I have a duplicate folder with that name but old messages are not there, new ones that are supposed to get moved to it by filters remain in inbox, I can't move messages in or out of it.
Nothing from the developer tools error console caught my eye. What can I do to see what the problem is? Can I look in other places for errors or?