I might have inadvertently fixed it through some other change/fix.
Hm, I don't recognize that from software development best practices. I thought it was...
If you fixed something, it was on purpose
If you broke something, it was an unforseeable accident
If you want to fix it, it's a bug
If you can't be bothered, it's a feature
And if it drives your users almost
but not quite to the point where they give up and go looking for a competitor's alternatives....well, that's a value add.