So I was making this XP grinder and everything was looking good. I was making it from a skeleton spawner that I found nearby my house. I made it to where they fall and it would be one hit kill. The spawner has definetly no lighting at all and its all working good BUT I have this problem in where the mobs (skeletons) stop spawning. Also I checked the entities amount and its stops in about 25. Until there, no more skeletons spawn. And no... im not playing in peaceful.