I noticed another bug in the game, when a miner from Monfort Mine comes to the throne room with the news that 3 miners died, then the number of miners in Monfort Mine remains the same 500, but in Shallowrock Mine if you have 600 miners, then it really remains 597, that is, the miners die in Shallowrock Mine and not in Monfort Mine.
this bug was in earlier versions of the game.