Feeding an armadillo a spider eye doesn't cancel eating it

When right clicking a spider eye on an armadillo, the player begins to eat the eye in addition to feeding it to the armadillo. This does not happen with other animals; for example, when right clicking a beetroot onto a pig, the player does not start eating it.

Steps to reproduce:

1. Run this command:

/summon armadillo

2. Right click it with a spider eye

3. Observe that the player begins to eat the item.

For reference:

1. Run this command:

/summon pig

2. Right click it with a beetroot

3. Observe that the player does not start eating the item. Instead, the right click animation is played.