Put the summary of the bug you're having here
What I expected to happen was...:
The dirt/grass sand and wood blocks can be destroyed by an explosion by TNT or Creeper.
What actually happened was...:
When a Creeper explode or plant a TNT at a dirt/grass sand and wood blocks the explosion did not take any damage at all, except for the stone sandstone and wooden planks.
Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
MCPE-8 Creeper & TNT somtimes doesn't blow up sand, dirt, clay and snow