What I expected to happen was...:
I expected that once I started with the eating animation, in the portal, the animation would be canceled once I went trought the portal.

What actually happened was...:
After I went trought the portal, the animation did stop, however upon clicking on the food item in my hotbar again, instead of playing the animation, the food was instantilly consumed.

Steps to Reproduce:
1. Make a nether portal
2. Upon entering the portal wile hungry, just before being teleported beging to eat the food item.
3. After exiting the portal, be it on the nether or overworld, the food item will be consumed without the animation. Depending on how close to the ending of the portal teletransportation you are, it is possible to skip parts of the animation.