I’m honestly not sure that a central database for bugs is the best of ideas. The issues for a project should, ideally, be tied to, and integrated with that specific project.
It’s very very useful when looking for bugs to at the very least have a central search, I’ve encountered issues before which are filed against a completely different app than the one I’m encountering it in (usually because the issue is actually in a library that both use), which I would have missed otherwise. Having a single database also allows then moving bugs between projects in cases such as that without having to recreate it and linking the old one to the new one.