Just installed it!
The only mod that I have is respec in towns (can't stand having companions with all the wrong perks)
While I agree with your logic I see absolutely no reason for this to be by design.
I agree about the beta having tons of bugs...with last betas when I encountered bugs or crashes I just waited for the hotfix, but with this one it's too much... I already rolled back to the main
This isn't the case for me here, I have about 3-4 kinds of prisoners and each stack has less than 10 men, and still nothing.
After uploading it I didn't get any sort of link or ID reference to the upload.