Package: thunderbird Version: 1:60.3.0-1~deb9u1
For several (all?) IMAP e-mail accounts of mine in Thunderbird, whenever I write a long mail and send it, the autosaved copies in the "Drafts" folder won't disappear. However, the expected behavior is that after sending an e-mail, all draft copies of it should disappear automatically. (A copy does appear also in the "Sent" folder; there is no issue with that.)
