Blocks that are nearly fully sized push the player back.

When you jump on any block that has a small part of the top cut off(Pathways, soul sand, tilled soil, ect...) the block will push you and keep you on the edge of the block.

The blocks should clearly let you walk forward but they just push you back. 

Steps to Reproduce:
1. Get a pathway or soul sand block.
2. Jump on it from a lower block.
3. The block will push you back and keep you on the edge of it.