Post Process (Dynamic) Material Appears in Standalone but Not Build

I have a post process material that is a dynamic material. Everything seems to be working fine in the PIE and standalone, but when I package it, the post process material disappears. The dynamic material texture is from a shader that I’m pulling from a flow field plugin. I’m not getting any errors. I’m hoping there’s a tick box that I’m missing. I’ve been over it a thousand times.

Here’s where I initiate the dynamic material and assign it to the post process volume.

Standalone (cube is for reference)

Build

The issue I’m having is with the plugin I’m using.