I am also having this issue. I’ve deleted the game, disabled all DLC, created new saves, tried the pre-made prisons, and everything in between. Still happens.
It seems like prisoners that are unconscious and handcuffed (punished) are being placed in the infirmary by guards. They then slowly heal passively in the medical beds (the doctors refuse to heal them), and then they just stick there in the beds, taking up the space and preventing any other prisoners from being transported to the infirmary. You can manually force guards to move them by selecting “Move Prisoner to Infirmary” but this is irritating and basically breaks the game, since infirmaries become unusable and prisoners begin starving in them.
Is there any update for this? It basically makes the game unplayable. Thank you.