Usually worth just following this workflow:
That is useful for reporting bugs.
I am a developer so every now and then I make a concerted effort to diagnose a bug, then fix it, then do a pull request.
However, I do admit I usually give up before getting to the point of submitting something useful...
I suspect with that I can probably find the repository, so that I can check whether the comment has already been fixed, then I can work out how to submit a patch or bug.