It’s the most obvious conclusion, once you start using LLMs. There’s no grand conspiracy here
If an LLM can spot those better than a human, I'd wager it can write code without introducing them in the first place.
Ask your LLM to review the PR before submitting it. Then make it fix the problems. Then repeat the process until there are no more problems. At each step, document where it went wrong in a guide; next time, it can use that guide and will make less errors.
In other words, treat it like a junior that has infinite enthusiasm and talent but zero existing habits or wisdom. If you are not doing something like this, then you are going to have a bad time.