Niagara GPU Mesh Particles Not Working In Packaged Project

GPU Mesh emitters will not show up in a packaged project.

Found in 4.20 CL# 4302132 and 4.21 CL# 4307852

1. Open the Editor
2. Enable the Niagara Plugin and restart the Editor
3. Create a new level and name it "TestMap"
4. Go to Project Setting -> Maps and Modes  to set "TestMap" as the default level
5. Create a new Niagara Emitter and set it to "GPUCompute SIm"
6. Delete the Sprite Render and add a MeshRender
7. Create a Niagara System and add the Emitter
8. Package the project for Windows - 64bit

Results:
The mesh emitter will not show up

Expected:
The mesh emitter would show up in the level