Can't Gain Experience in Multiplayer

In this bug you don't gain any experience from mining blocks, or killing monsters.

What I expected to happen was that you would gain experience whilist killing mobs/mining blocks.

I thought you should be able to gain experience when killing mobs or mining blocks.

You didn't gain any experience, and don't even have an experience bar in the first place.
Describe what happened here

• Start a new world on the Snapshot.
• Play in Survival.
• Don't get experience.