I am currently sieging the settlement of Bornais and my infantry just pushes the towers to the walls and then stay there idle and don't climb them.
From what I've seen, this bug is several months old and still didn't got fixed.
I've tried to give ToB a chance but this seriously kills any will to go further on my current campaign.
Is there any solution to this? And no, auto-resolving the battle is not an option