Can't use nether portals while riding a pig

In the update it's supposed for all entities to go through portals.

Well, you can't use a portal if you are riding a pig

Steps to Reproduce:
1. Create a nether portal
2. Spawn a pig
3. Put a saddle on the pig
4. Use carrot on a stick to lead the pig to the portal
5. You will pas through the portal and even if you stop you won't feel the portal effects