Thanks, one of our designers will have a look. We really need a tiny more margin when composer is minimized (it even just stops us now from chatting)
One additional improvement we made recently is making it super easy to just dismiss a draft and get back to it. The X closes it and then you can reach the draft from your drafts.
That said, I find it compelling to have a draft going while I am chatting so I would love to restore this functionality on both horizon and foundation.