Sure,
In Lyonesse, Flint declared a rebellion. Loyalist forces were a few regions away. We made our way to the capital where Flint and Sadat had a couple turns of taking over with no resistence. Loyalists show up, battle wages, Flint and Sadat flee. I try to exile them both, but can't during a rebellion. Flint goes to his region and changes allegiance to a neighboring realm. Next day the rebellion is over and Sadat is removed from his title, but since Flint is now a member of another realm, he keeps his position.
Seems to me this could be abused when the rebels see they are losing, just leave the capital and switch allegience before the rebellion officially ends.
There may be a second bug here but I'll wait until tomorrow to confirm. Flint was the General which is an elected position, him leaving the realm didn't trigger an election, though it shows the position as empty.
Thanks,
Scott