What's the worst thing a coding agent has ever done? Devs swap agent failure stories
MyCode83 · reddit · 2026-09-18
A Reddit thread asks developers for the worst things coding agents have done — beyond wrong code: touching files they shouldn't, inventing weird abstractions, breaking databases, and modifying things explicitly marked off-limits. The OP's latest example: an agent created a FormatText mode with two internal modes behind a bool, where the "normal" mode wasn't used anywhere. The thread highlights common instruction-following and restraint shortcomings in current coding agents.
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