I have the same problem too
I am blue and i had 5 trad agreement with Team bonus.
2 days ago i changed my Color team only for a few minutes to NONE. My team bonus disapeared and it was natural. after a few minutes i changed it again
, my team color to blue again
But my team Bonus never comeback
I think it is a bug
there is no reason when we are all ina blue team we don't have team bonus. It is not logical
I know it was my mistake that changed the color. but why after rechanging color team bonus didn't comeback???