When you're in survival mode, and a creeper comes along, and you start hitting it, it puffs up but doesn't explode.

What I expected to happen was that the creeper would blow up.

The creeper puffed up and looked like it was going to explode, but it never did. It just froze there and I killed it with one hit. Now I like that the creepers aren't exploding my things, but they are supposed to blow up.

Steps to Reproduce:
1. Find a creeper wandering around.
2. Get any sword, and start hitting it.
3. Let the creeper puff up all the way.
4. Watch as the creeper just stays like that.
5. Hit it again and it will die and probably leave some gun powder behind.

I don't have any screenshots for you guys, sorry. Because of another bug I cannot get one for you. I'll post that one after this.

Also I hope you know that this is a report for Minecraft: Pocket Edition, version 0.16.0. Your version selection doesn't really make it clear on what to select.