Most of the bugs that make it to production are where the code seems totally reasonable, but someone misunderstood how systems interact, or what really happens in a corner case. AI is great at making reasonable looking code. It's terrible at... understanding.
Me today: And make sure the tests pass. AI: Great, the test cases are all updated! Me: You didn't actually run then. AI: Perfect! You're absolutely right, I will run the tests now.