Watermelons and pistons

Put the summary of the bug you're having here
Watermelons and Pistons are not able to be targeted or destroyed in survival mode anymore
What I expected to happen was...:
Describe what you thought should happen here
I should be able to break them so i can eat or make room
What actually happened was...:
Describe what happened here
i can't target them nor break them
Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
2. ...it is like this on all my survivals so i think it is always triggered
3. ...