might be an issue with more castles but this is the only one i played, i attacked castlehof but it had reinforcments from the side due a army being nearby, instead of spawning inside the castle they came in from the side but they walked into a rock, now theyre inside of it and cant move, a possible solution might be to open up the map for reinforcments to be bale to get through, like having reinforcments lanes on the side of each castle, even if they dont look pretty it would be functional