Iron golem spawn inside the block and in place of the bell

Developers. Yes, I answer that invisible! ?????? !!!!!!! ???Unable to render embedded object: File (? !! !! !!   You will notice me when that !!!!!!!!  ) not found.!!!! When the iron golems on the farm of the gland spawn, they can fall asleep in the inside of the blocks or in the place of the bells. The screenshots show everything!