That is very unfair to the new noble, who perhaps chose your vacant estate because it was large.
It's like advertising "buy 1 get 2 free" and then after you buy 1 he's like "well, I gotta sell the other 2 to other people, so nothing for you".
Bah. I'll cut the lords share and balance it out. But it's easier to do that when estates are at 100% efficiency, which means I need a total of 3 knights.
well.. they don't have to stay.... i suspect he'll shrink all estates.. (including mine) not just the new knight
I normally set all estates to the same size--better for efficiency.
But, out of "fairness", I've set the vacant estate to 25%, it won't change size.