XP are invisible

Put the summary of the bug you're having here

What I expected to happen was...:
Describe what you thought should happen here
I was expecting to see the XP

What actually happened was...:
Describe what happened here
it doesn't show but you get the do

Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
2. Just mine or kill a mob
3. Do is invisible