Foxes spawned inside of powder snow sleeps

By spawning a fox in powder snow, the fox start sleeping while it is inside the block. This causes them to slowly freeze to death while sleeping unless a mob or night time has woken up the fox by approaching it.

To reproduce

1. Place powder snow

2. Spawn a fox in the powder snow
   → ❌ It begins to sleep whilst in powder snow, eventually it will start taking damage.