I have a question about the Mullvad Extension and DNS leak behavior I have noticed in both Mullvad Browser and standard Firefox:
When turning on the Socks proxy, I get 2 hits on a DNS leak test: The mullvad server and the proxy server. Not ideal, but still not leaking outside of VPN itself. It still bothered me so while taking a closer look I noticed when you put in an invalid DoH URL in the browser settings, it no longer leaks and I only see the proxy location on a leak test.
Is this a working hack that will truly stop the VPN relay behind the proxy from showing? I don't have time to study the extension in depth to figure out and figure there's smarter people here anyways that could chime in.