Behavior Entity Scripts Don't Work Again

Any entity that uses scripts in it's behavior pack won't use the script at all, even upon reloading the world.

Expected Behavior: 
 - Entities behavior scripts are run upon spawning or when conditions are met.

Actual Behavior:

 - The scripts aren't run no matter what

Steps To Reproduce:

1. Add a script to run an animation or controller to an entities behavior file
2. Load a world
3. The script will never run on the entity