I edit proposals for an IT company. When I finish a document, it’s handed off to desktop publishing for final layout and formatting.
One of the DTP specialists periodically points out to a supervisor something that I missed, without telling me. Rather than just make the correction (and do me the courtesy of letting me know), she feels compelled to promote herself at my expense. I find out about this through the informed supervisor.
Editing is the most hapless, thankless profession. We are judged almost exclusively by our mistakes.