This appeared as an issue in the issue tracker, but was silently removed afterwards, so I’d assume it is intended behaviour, and the workaround is the solution.
Using the networking part of UE4 actually is like an exploration game.
Well, except for the fun. Don’t get me wrong, I believe the network engine is very efficiend and high quality from a technical point of view, but in terms of maintenance, backward compatibility, documentation and foremost communicating changes in the release notes, there is room for improvement. The size of this room - well, explore for yourself :-).