Spawner egg delay and crash.

Spawn egg delay, re-login spawn egg gone and crash

I use Zombie spawn egg and it should spawn Zombie.

But it delay and spawn as many as I click in the same time.

I done this
1. Go in my creative world
2. Grab Zombie spawn egg
3. Spawn zombie like normal
4. Spawning stop and spawn later as many as I click
5. I spawn again and the same thing happen
6. Re-login the map and crash