I've filed a bug and happily went away awaiting for an email to drop once a response was written. No email ever came, so I checked back after a few days and found out that the response was actually already written, it's just that I wasn't subscribed to (not watching) the bug I reported. Shouldn't that be by default?

I used the old Qt bugtracker (task tracker) a lot before, and I always got email notifications, no extra steps needed. I believe that's what other developers are used to as well. In addition to that, in all the other bug tracking systems I used before I was always subscribed to follow-ups by default.