[Q]

Kwok, I found a small bug in your BM 1.11 AI politics script regarding the AI team mode:
The instruction to propose a treaty and not to break a treaty in the team mode are not at the end of the corresponding script section. Therefore it is possible that a script instruction that follows later still makes the AI to break a treaty in the team mode, which is exactly what I observed.
I moved your AI team mode instruction at the end of the section and after two turns all AI were united in treaties.