Sneak-walking on a block under a chest doesn't work

Description:

Sneak-walking on a block that is under a chest (possible because of its small bounding box) is not possible as when you try to move, you get stuck unless you stop sneaking or jump. I believe it also works with honey blocks, but I don't know any more examples.

How to reproduce:

1. Place a block on the ground (make sure no blocks are touching it from its sides)
2. Place a chest on the block
3. Go on the block under the chest and sneak

What should happen:

You sneak-walk normally

What happens instead:

You get stuck and can't move unless you jump or stop sneaking

 

FINALLY added video. Admins need to put it higher, like about 20MB (please?)