SafeZone Browser and Secureline

Hi,

My Avast Premier product was updated yesterday (03.11.2015) and safezone browser installed instead of SafeZone product. I connect to internet via secureline, and always I check out my location, ip, and dns addresses in ipleak.net site. In firefox browser, webrtc property has been prevented via random agent spoofer extension, therefore I see only the location, ip, and dns addresses that were assigned by secureline server. But, I see my original location in SafeZone browser when I connected to internet via active secureline product. Is there any extension to prevent webrtc detection in safezone browser?

It is not possible to hide your real IP.

Are you sure? Even in Firefox? I attach my screen image. Is it not true?