Affects Version/s: Minecraft 1.10.2
Fix Version/s: None
Environment:Windows 10 (Pro x64). Java version 1.8.0_91 (x64)
Put the summary of the bug you're having here
What I expected to happen was...:
I expected sand to return to "solid block" state when colliding with the top of fence blocks.
What actually happened was...:
The sand block never changed back from an entity. It stopped at what appeared to be the top of the fence's collision box. Some side-effects of this include periodic "hopping" of the sand entity, including no longer having a collision box that players can "impact".
Steps to Reproduce:
1. Place fence anywhere.
2. Place a sand block in a position to deliberately fall on top of the fence.
3. Observe the stuck sand over the fence.