It does, but if you have a VPN that let’s you send your traffic through wireguard (like protonVPN, don’t know about others :/) it will send all your traffic through that tunnel.
Also, there was a recent update which uses your wireguard’s DNS instead of rethink’s hardcoded internal DNS. That was the awaited updated I needed to fully switch to rethinkDNS.
There are still some quirks in the interface and a few strange behavior with wireguard when waking the phone up, but nothing that causes leaks in my experience, because if my wireguard tunnel isn’t working rethink isn’t able to make any requests !