I recently had a coworker point out to me a grammatical error I keep repeating, flush vs flesh, that he had reminded me of a year ago.

I recently pointed out to a different coworker some whitespace inconsistency in a pull request in a similar fashion as I had pointed out a while back.

In digging deeper into both situations where I was the reporter or the reportee, the issue came down to legitimate lack of agreement on whether it was indeed a mistake.