I can understand honest mistakes, but like, usually when I develop anything with agents (which I assume is what you're doing internally at Anthropic), they're almost too enthusiastic about trying to add test cases to the point where they sometimes try to glue together things in ways that are structurally impossible in the actual code in order to try to test that behavior. I'm honestly a bit mystified that adding a new feature didn't get bundled in with tests that the feature works for arbitrary configurations.