Yes, I have experienced it, too. I was building a web crawler using Replit as an agent. I could have done that in 2 hours without LLM help but I wanted to see how the LLM would do it. I gave it a set of of instructions but the LLM could not execute on it. It later choose an alternative path but that also did not yield. I then gave an exact list of steps. Results were slightly better but not what I was expecting. Overall, it's good to get something going but you still have to hold hands. It is not the best but also not the worst experience.