What happened to Thunderbird email client?

Slightly similar issue posted at https://support.mozilla.org/en-US/questions/1615021

Maybe even a third one posted at https://support.mozilla.org/en-US/questions/1615096

Also https://support.mozilla.org/en-US/questions/1615089

Perhaps https://support.mozilla.org/en-US/questions/1615213 and https://bugzilla.mozilla.org/show_bug.cgi?id=2087454

I assume that a fix is on the way?

No. It’s only b just been discovered. And it’s the eeekend.

My guess is a week at minimum. But perhaps a workaround will be found

I have found a work around to bring the folders back into view... Right click on the account name in the left pane that has its folders missing. Subscribe. Click OK. The missing folders will reappear and FB will then resync. Not a solution and resyncing can take a while.

Also, while we are waiting for a fix...don't close FB, just minimise it. The problem only occurs when starting FB.

Thanks for that, seems to work, will remeber to do it each time I start TB