Observation: Long, long ago I submitted a bug to Microsoft. I was new at the time and didn't distill it down to the minimum, just gave a scenario that would 100% reproduce. I was contacted months later because someone looked at it and couldn't reproduce.

Yeah, I had found one manifestation of something else that they fixed by the time someone looked at it. The fix in the notes didn't look anything like my bug, only by observing that it now worked I was able to figure out that I had been the blind man trying to describe an elephant.