Armor Stands don't get in minecarts

I was pushing a minecart into an armor stand to put the armor stand in the minecart, but it refused to go in.

What I expected to happen was...:
I pushed a minecart into an armor stand, and expected it to get in the minecart

What actually happened was...:
It didn't get into the minecart

Steps to Reproduce:
1. Place an armor stand on some rails
2. Push a minecart into it