Yay, another convert.
I have exactly the same issue - which started when I was switched to the "new" BT email in early February. Have reported it to BT on three occasions now, told I will get a response in 5 days. Still waiting.
Incidentally, I don't see much improvement or innovation in the "new" email. Still quite clunky. Opportunity to improve screen formatting, maybe auto-suggest which folders inbox emails could be moved to etc. - all seem to have been missed.
Thank you, Peter! Much appreciated.
If BT is aware of the problem why did they roll out this new version with an obvious fault? The whole thing is not an improvement anyway!