Put the summary of the bug you're having here

What I expected to happen was...:
Arrow would stop travelling when hitting block.

What actually happened was...:
Arrow shot through block and stopped in midair a block or two beyond it.

Steps to Reproduce:
1. Place one block in midair
2. Shoot at it
3. Arrow travelled through block - look behind it to find the arrow
4. Doesn't always happen, but try horizontally and vertically may cause issue to recur. DOesn't always happen in each direction so should try multiple.