The bug tracker is often used as chat (see #3382 and others), which is obviously not good.
I had a short search and found no IRC channel (or something similar), where new and old developers can simply discuss things which should not be archived together with the bug ticket.

Please create such a chat and advertise it on the related pages.

The head area of the project page would be a prominent place to advertise your chat. Even new contributors would see it: