When you're sure that it's a bug, you should report it to the bug track system, not to this forum. This forum is for configuration issues and though it's run on the Ritlabs server the forum is intended as users helping users.
You can insert bugs in the bugtracker, by logging in to:
Choose 'The Bat' and add a new item. First check whether someone has reported the same bug, then you can add a note to that bug. Bugs that are reported by more users are more likely to get attention than bugs by one. And the system isn't smart enough to understand that bugs might be the same. And add just one bug per entry. Makes everything easier, both for other users who want to add a note and for the developers.
Bug are also reported and discussed in the TBBETA mailing list.