Spiders suffocation when spawned on side of block with an egg

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