1. When an AI player has a relation good enough towards me to offer a pact while my relation level towards him is lower, he makes his offer but once I accept it immediately recall the pact. It's a small glitch but it may worth to correct it in the future.
Also, when you start a game with open teams, AIs sometimes immediately revoke planet vision.
2. Has "AI relationship bonus" factor gone? I find that it is now always 0.
Aye, never seen this row with a nonzero number (mind, I started playing Diplomacy only recently, with the latest patch).