explosions (TNT and Creepers) are too powerfulls

Put the summary of the bug you're having here

what i expected was...
A creeper explosde next to me and i thought i was gonna die

What actually happened was...:
But instead of die i blew up like 9000 blocks to the air and i landed on a cloud

Steps to Reproduce:
1. Ignite a tnt or a creeper next to you
2. watch
3. ...