You didn’t even know you had encountered Heisenbugs, Bohrbugs, and Phase of the Moon bugs before, but you have. Despite the Wikipedia article name, they’re not that unusual.
This reminds me of my favorite debugging quote:
As soon as we started programming, we found to our surprise that it wasn’t as easy to get programs right as we had thought. Debugging had to be discovered. I can remember the exact instant when I realized that a large part of my life from then on was going to be spent in finding mistakes in my own programs.
