Editor Multiplayer Option "Play As Client" and out of date NetDriver

Does anyone know why using the Multiplayer Options below with a boilerplate 3rd person project and typing:

open 127.0.0.1

in the client console spams the client log with:

LogWorld: Warning: SetActiveLevelCollection attempted to use an out of date NetDriver: GameNetDriver

I’m testing server & client in the editor and this is an issue. If I create a batch file that starts the server & client up on the command line this doesn’t happen. Seems an editor specific bug in the “Play As Client” option?

266415-multiplayer-options.png