Sand is not blowing up

Put the summary of the bug you're having here
I was blowing up TNT in creative.
What I expected to happen was...:
Sand would disappear when blown up

What actually happened was...:
The sand did not disappear! It was like I was trying to blow up bedrock.
Steps to Reproduce:
1. Put TNT in a desert in creative.
2. Light the TNT.
3. The sand does not blow up!