I was deleting multiple msgs in a Drafts folder and noticed that after I opened the draft msg and Discard-ed it, the Drafts folder message counter does not update. Not a show-stopper but it seems that the counter should update immediately.
See below (after I had opened and Discard-ed the last remaining msg in the Draft folder.)
Naturally, after I opened the folder once again, the count updated.
If we Discard a draft msg directly from the folder list (i.e., don't open the message) then the counter updates immediately.