Put the summary of the bug you're having here

What I expected to happen was...:
I expected to run forwards

What actually happened was...:
Slab appeared to pull me towards it

Steps to Reproduce:
1. Place water and use a hoe on dirt
2. Break a block next to the 'hoed' dirt and place one slab on the top part of the block
3. Run or walk from the slab to the 'hoed' dirt and you will notice your movement will be reversed, slab pulling you towards itself

(explained better in the picture and video)
Video perfectly shows whats happening
Video showing bug