Networkmanager Configuration

I recently noticed my DNS was leaking when using OpenVPN. I know I checked several months ago and did not identify any leaks, so I don’t know if Networkmanager changed again or I simply missed the leaks. Anyway, after searching for a fix I came across on another forum to comment out the “dns=dnsmasq” in the /etc/NetworkManager/NetworkManager.conf. This works for me with all OpenVPN connections so far. So my question, what problems might I encounter with this change?