Elytra loses durability when taking damage

When having an elytra equipped and taking damage, the elytra looses durability. When reaching 0 durability, the elytra item gets destroyed.

How to reproduce

1. Get an almost destroyed elytra:

   /give @s minecraft:elytra[damage=420]

2. Equip the elytra

3. Get damaged

4. ❌ Notice that the elytra is getting damaged

5. Get damaged more so the elytra reaches 0 durability

6. ❌ The elytra item gets deleted

Expected result

An elytra should only loose durability when flying and should never get below 1 durability.