Minecraft Username:
PapaDwaggy

Brief Description:
Polar Bear Spawner not spawning Polar Bears

Instructions:
I built a farm for polar bears around the spawner mechanics and there is enough grass for them to spawn on but recently, they outright stopped spawning altogether.

How many times did you recreate this?:
Several times

Result:
No polar bears spawned

Expected Result:
Polar bears should spawn

Evidence: