Tadpoles swimming in waterlogged slabs or stairs pathfind onto land causing them to die

Tadpoles swimming in waterlogged slabs or stairs pathfind onto land causing them to die

 

Steps to reproduce.

1. place down a slab or stair
2. waterlog the block
3. spawn a tadpole
4. wait until the tadpole swims onto nearby land
5. watch it slowly suffer until it dies