In my world, rabbits jump and, at some point, they get stuck on the blocks' side, especially when they aren't "full blocks", like glass panes, iron bars, fences... In a few cases they get successfully unstuck and start jumping as normal, until they touch another side of another block...

What I expected to happen was...:
I thought they wouldn't get stuck in these blocks...

What actually happened was...:
...they got stuck in the blocks... 

Steps to Reproduce:
1. Spawn Rabbit (even more than one if you want)
2. You just have to wait a few seconds. They will jump near the side of a block and... BUG TRIGGERED!

I attached some videos and screenshots about my problem. Thanks for helping!