When you spawn spiders in creative mode while looking at the side of any block spiders seems spawn way he begin to suffocate and can't get out. I just wanted to spawn it in a hole to make it fall and discovered that bug.

What I expected to happen was...:
Expected to spawn spiders and fall them down the hole.

What actually happened was...:
Spider spawned just near the wall and just stick in, than got suffocated.

Steps to Reproduce:
1. Put any block or a wall of blocks
2. Look at it's side (Or at the bottom of just next to it block)
3. Spawn a spider