Dithered LOD transitions do not work when the camera's field of view changes

Dithered LOD transitions do not work when changing the camera's field of view and cause artifacts when both the FOV and camera distance to the object are changed simultaneously.

• create a blank scene and add a cube
• create a new material, connect a 4-constant node to the base color and convert it to a parameter. Set the color to white and check DitheredLODTransition in the Details panel.
• Make three instances of the previously created material and set their base colors to red, green and blue.
• Open the cube and add three LOD levels, with screen size 1.0, 0.25 and 0.1. Assign a different material instance to each LOD level
• add a camera and position it so that it looks at the cube
• change the Field Of View value of the camera and notice how the LOD transitions are not using dithering
• add a LevelSequenceActor and a CineCameraActor and create an animation where the camera distance to the cube changes slightly while simultaneously changing the FOV. Notice the artifacts in the dithering when the cube transitions between LOD levels