The Github issue tracker is not quite cutting the mustard for our (open-source, but professionally developed) project: it has the bizarre and crippling* restriction that non-owners can't assign labels or users to issues.
So we need a new issue tracker. We don't need a lot, but labels (for components, and to distinguish subprojects) and user assignation are pretty important. Integration with Github would be a real bonus, as would nice ease of use. It has to be hosted, and preferably free-as-in-beer (or at the very least, have no per-developer charge).
Is there anything that fits this bill? Pivotal Tracker looks nice but is more of an agile work tracker than an issue/bug tracker. Trying Lighthouse now, but Github integration (if possible) could be fiddly.
* Crippling because giving someone "ownership" status gives them the ability to delete the entire repository: issue permissions and code permissions are not distinguished.