Trident loses loyalty effect when using end gateway

The bug

Tridents with loyalty lose their ability to return after the player uses an end gateway and comes back. Exiting the world and reloading it makes loyalty work again.

Video: https://youtu.be/mtyiBHuKh3Y?t=3m52s

How to reproduce

1. Go to the end

2. Give yourself a trident enchanted with loyalty

   /give @s minecraft:trident{Enchantments:[{id:"minecraft:loyalty",lvl:3}]}

3. Use an end gateway

4. Go back to the main island using the end gateway
   → ❌ Tridents will lose their ability to return to even though they have loyalty