Sphere Reflection Captures are not working on Mobile (OpenGL ES 3.1)

Hi,
I have huge problems with Sphere Reflection Captures on Mobile. (OpenGL ES 3.1.)
The Sphere Reflection Captures are making no reflections. I am using at the moment the “Automotive Project” for testing purposes. I don´t understand what I am making wrong. I would be very grateful if someone could help me.

Best regards, Andreas