I go to End to try the @e command with the ender dragon. Im in creative mode and i builded the End Portal. Then i activated it. After all i jump in the portal and minecraft get crashed.

What I expected to happen was...:
I go to End

What actually happened was...:
When i jump in the portal my minecraft crashed.

Steps to Reproduce:
1.Try this command:

/kill @e[type=EnderDragon]

nothing happend
2. i get some End portal Frame(becouse im in creative mode)
3. i placed to open the End Portal
4. I activated it and jumped to the End Portal
5. Then my minecraft got crashed