We are aware that there is a problem with the size of rebel stacks at the moment.
I'm so relieved to hear that!
I know as a fellow programmer that when you build up such a complex and massive system such as this game, there are things that you could oversee even with extensive testing.
I would also appreciate when if you may tell us approximately when you are planning to address this issue.
And if you have not already, my humble suggestion would for you to take a look at
Mann's post.
It would surely ease the debugging process for you.
p.s. If I'm not mistaken one additional issue that's not been mentioned in Mann's post is that the event troops do not ever disband. This broke an Ironman game of mine where one count gathered a massive number of units out of thin air and then just kept on pressing the claims of ERE claimants one after the other every single month cause she basically had the necessary numbers.