Steam UE4 Built-In Plugins enabled. In DefaultEngine.ini, under [OnlineSubsystemSteam], I have:
bRelaunchInSteam=true (in addition to the other lines controlling other Steam functions)
Expected result: When the game is launched while not being connected to Steam, it will close and attempt to load Steam and load through the Steam interface.
Actual result: Game works normally while not connected to Steam.