I have seen before some rare instances where apps are not able to connect online if DuckDuckGo's tracker blocking VPN function is set to always on (Not to be confused with the more extreme option of blocking connections without VPN) but GrapheneOS gets hit even harder by its native apps being unable to connect online if that setting is active. It doesn't make sense to me why this happens because whether that setting is on or off shouldn't effect data transmission, only whether it is always on or not and I don't see it turning off at any point.