Docker Proxy Not Reflecting on Mac

Using the Docker preferences in Mac i have configured the proxy settings for http_proxy and https_proxy, now even after i restart docker, these changes do not reflect.

Output of docker info

Docker Root Dir: /var/lib/docker
Debug Mode (client): false
Debug Mode (server): true
 File Descriptors: 21
 Goroutines: 39
 System Time: 2018-07-10T03:16:35.485238573Z
 EventsListeners: 2
HTTP Proxy: docker.for.mac.http.internal:3128
HTTPS Proxy: docker.for.mac.http.internal:3129

But settings in docker preferences can be see in below screenshot.

I’m having the same issue, did you manage to find any solution?
Thanks