AI stops developing beyond T1 (Warcraft 3)

If I edit any standard battle map, even a micro change, then after saving the AI ​​does not pump the main building. Plays stupidly T1. How can I fix this? What is causing this?
I just have one favorite map, I wanted to add the Tavern there. It's just that.
Moreover, that is the standard AI, that even if the card is lost through IMAI (a strong computer), it is still the same.
I even once just opened the map through the editor and immediately clicked SAVE. In general, I did not make any changes. That's all, this is enough for the computer to develop stupidly on T1.
Tell me how you can fix it?