One solution to these kinds of social situations is to have the person filing the issue to close it in the end. This way the issuer is empowered to verify that

One solution to these kinds of social situations is to have the person filing the issue to close it in the end. This way the issuer is empowered to verify that either there was no issue in the first place, or that the proposed fix by a developer in fact actually fixes the person's real issue.