I believe that if a green dragon starts a turn with a stack it gives them the move bonus. However if I move the dragon and leave the stack I think that the move bonus stays with the stack in subsequent turns. I will double check this to verify but I am fairly sure that this is occuring. Should it be? or is this a bug?
It should only give bonus to units on the same tile as the dragon is at the start of the turn. Otherwise its a bug. Please let me know what you find out
it didn't apply in another game and the previous game has since ended before I could test. But I think it is not as I reported. I had a red dragon with 31 with a green dragon, i moved the green dragon and the red dragon had 28 at the start of the next turn.