No items are received from killing livestock mobs. Cows, Pigs, Sheep, Chickens and Fish are the affected mobs.

What I expected to happen was...:
I would expect to receive some food items or secondary items from killing livestock mobs. Beef or Leather from Cows for example.

What actually happened was...:
When killing livestock mobs only experience is received, no food or secondary items

Steps to Reproduce:
1. Kill any livestock mob

The video file of the bug was too large to attach to the medal clip link has been added for your reference.

https://medal.tv/games/minecraft/clips/29GD1obJYqhYXP/d13375NjCPSO?invite=cr-MSwxMm0sODQ0Mjk2NTQs