CameraPosition Node in a Material Shader does not behave correctly with Metal

When using a CameraPosition Node in a Material Shader, it does not behave correctly with Metal.

Working as expected in 4.20 CL# 4369336

Found in 4.21 CL# 4613538 and 4.22 CL# 4666322

1. Open attached project
2. Play in Editor and look at the floor material
3. Launch on an iOS Device and look at the floor material

Results:
The region of the floor nearer to your point of view becomes white. The region of the floor beyond a certain distance becomes grey.

Expected:
The whole floor is white like it is on other platforms