[4.7.3] Problem with reflection on Mobile Platform

When I use Reflection Capture for PC platform it worked, but when I change to Mobile Shader or compile for iOS then no Reflection in Scene.

I noticed that if you use projects from the Learn is reflection work(Example in “Content Examples” map “Example Project Welcome”) and on a mobile platform and a PC, even after the addition of new actors and re-build. But when you remove all the old Reflection Capture Actor and create a new Reflection Capture Actor then reflection is disappeared, re-building is not helping.

Please help me to determine whether it is a bug, or I made a mistake somewhere.
Work or does not work reflection on mobile platforms when creating an empty project in 4.7.3?
Forgot to say that you can not use direction light, only spot light and point light. (In room)

Sorry for my bad English, but I really need yours help!

And I noticed that the option “Min roughness” does not work for mobile platforms!