Given that the nature of the other bug messes quite thoroughly with sshd's ability to communicate between bits of itself, including the protocol that allows it to set up a session properly, I don't think it's fair to consider the TERM/pty/login-shell issues as unrelated. If 1:6.2p1-3 fixes this then I would consider this bug a duplicate, even though the exact set of symptoms reported here is a bit different.
Given that the nature of the other bug messes quite thoroughly with sshd's ability to communicate between bits of itself, including the protocol that allows it to set up a session properly, I don't think it's fair to consider the TERM/pty/ login-shell issues as unrelated. If 1:6.2p1-3 fixes this then I would consider this bug a duplicate, even though the exact set of symptoms reported here is a bit different.