Experience orbs spawn completely still

The bug

The experience orbs that are spawned when a mob dies, ore is mined, or a bottle o' enchanting breaks are spawned in the exact same place, with zero velocity.

Expected behavior is for them to spread out in random directions similar to block drops. This worked in previous versions, but broke at some point.

How to reproduce

1. Kill a mob, and quickly run away so the orbs aren't attracted to you.

2. Watch as the body despawns and the orbs appear.
   → ❌  They all spawn in the exact same place with zero velocity.

3. Same thing occurs when using a bottle o' enchanting or breaking rare ore.