Single player Rocket League: does my team get dumber over a season?

I've played several seasons of Rocket League single player and I feel like I've noticed a trend: after a few winning games, my team seems to get much much dumber. I'm not talking about failing to set up / take advantage of a near-goal rebound. I'm talking about my bot friend suddenly deciding to sit quietly in goal, watching the ball slowly roll past.

I know that Psyonix has announced that bots adjust to average player skill level. Am I seeing an actual intended effect? Or am I just exposing corner cases in the AI logic?

Follow-up some time later with some of the more obvious symptoms of your teammates throwing the game: these are All Star AIs but they will stop jumping early (anticipating the ball) and you will be the MVP for the game more often (they'll have significantly fewer shots on goal).

There is no reason for bots to actually do that since they're specifically designed to play along with you. So a bot sitting in the goal box and not going after the nearby ball is definitely a hangup in the bot's path logic or something related to that.

It's very likely that Psyonix's AI update set some things back. This happens to pretty much everyone designing AI because there are so many factors that go into intelligent play.