Material Parameter Collection parameters only return default values when drawn to a Render Target

Material Parameter Collection parameters only return default values when drawn to a Render Target

This does NOT happen when drawing a material using a non-MPC parameter. To test this:

1. Open Actor_BP > Focus the Construction Script > Connect the Construction Script node to the Set Scalar Parameter Value on Materials (instead of the Set Scalar Parameter Value)
2. Open "Mat" > connect parameter "Scalar" to DebugScalarValues' Number pin
3. Compile/Save the blueprint and material
4. Select the actor in the level > select "Draw"
5. Open NewRT
6. Disable the RT's alpha
7. Result - parameter is properly passed to the render target

1. Open the attached project
2. Open TestMap
3. Select Actor_BP in the level
4. In the details panel, select the "Draw" button
5. In the Content Browser, open NewRT
6. In the Texture Editor Viewport, select View > disable Alpha

Result: the Render Target shows ".0000000" instead of 0.123456