When I send an email from a draft, the copy of the email is never removed from the drafts folder.
Additionally, the client also seems to save a new draft at every autosave time interval when the draft has been modified; if I have a draft open for an hour and have modified it 5 times throughout this hour I will have 5 separate copies of the email in my drafts folder, and none will be deleted/removed on sending the email.
I’m running version 7.1.30794.0 with my work IMAP account. I get no error messages on sending drafts.