I would say finding that the bug is in a library is worse than finding it in your own code.
If it’s your own code, you just fix it.
If it’s in a library you then have to go and search for issues. If there isn’t one, you then go and spend time making one and potentially preparing a minimum reproducible example. Or if you don’t do that (or it’s just unmaintained) then you have to consider downgrading to a version that doesn’t have the bug and potentially losing functionality, or even switching to another library entirely and consequently rewriting all your code that used the old one to work with the new one.
Yeah, I’d take my own bugs over library bugs any day.