Interesting bugs when trying to walk on almost full blocks.

What I expected to happen was...:
When I walk on crops or try to walk to a grasspath from a slab, i expect to be able to walk through.
 
What actually happened was...:
Instead of walking through, i cant.
 
Steps to Reproduce:
 The Grasspath one:
    1. Place a slab next to a grasspath.
    2. Try to walk on the grasspath, doesnt work
 The Farmland one:
    1. Simple, try to walk on top of farmland/crops.
 
 
Video: https://youtu.be/ZWIxWqf-ChU
Photos: https://imgur.com/a/pRjTh9a
(For some reasons uploading these to Jira didnt work)