Currently, there is a bit of confusion over the current states of the 6.x-2.x dev branch, 6.x-2.1 release and 6.x-3.x dev branch. Unfortunately, during the drupal.org redesign process, Homebox recieved a large number of relatively undocumented changes that have resulted in a large number of commits against the 6.x-2.x-dev branch that should have been placed in a new 6.x-3.x branch. Unfortunately, this means that 6.x-2.x-dev and the stable 6.x-2.1 release are not particularly closely related, especially in the UI portions. At this time, I cannot accept bugs against 6.x-2.1 as they usually can not be fixed in the 6.x-2.x-dev branch. I also cannot revert the 6.x-2.x-dev branch to match the 6.x-2.1 release again as many sites have begun to use the 6.x-2.x-dev release, which is also the version in use on drupal.org.
I have instead created a new 6.x-3.x branch for continued development. This new branch carries on the development on the 6.x-2.x-dev development branch. If you are currently using 6.x-2.x-dev, please update to 6.x-3.x-dev. Once we have a 6.x-3.0 release stable and ready, I will be deprecating the 6.x-2.x branch altogether.
The 7.x-2.x branch, which currently is a port of the 6.x-2.x branch, will now be following the 6.x-3.x branch.