For serious developers or engineers

I have been using Claude code and cursor for the past almost 2 years. Everybody is talking about loop engineering and graphs. I have such a setup with over 10 agents. It used to work pretty well. Over the past month, the more autonomy I give to the agents the more complicated they make the solution thus getting trapped in a loop for hours. They tend to find bugs and add nice to have features that are not even nice to have when the effort is huge and the value is low. Am I the only one experiencing this strange behavior?