when your falling and try to break a slime block, it breaks but does not go away.

when you break a slime block while jumping, it stays there but you can walk through it

I expected the slime block to disapear.

What actually happened was the slime block stayed there and you could walk through the block

Steps to Reproduce:
1. place down a slime block.
2. fly about 4 block above it
3. stop flying and break the block
4. try to walk through it, because you can!!