Right now when we work with 4 emailadresses in Clickup, there is no default emailadress.
So when you are in a thread in a task, and by accident select a different reply-to address, then the reply from the client does not populate in the thread (!) which is really bad.
It's not a bug as I understand from CU, but expected behavior.
We can tackle this if we cannot switch the reply-from address once in a thread.