What's the worst bug an AI coding agent silently introduced into your code?

I'm researching AI code reliability — specifically bugs that pass existing tests but cause real failures. Interested in patterns: what breaks, how it's caught, and how long it takes to debug. Happy to share aggregated findings with everyone who responds. Comments URL: https://news.ycombinator.com/item?id=50374984 Points: 3 # Comments: 1