Same problem as the post above me. Controls are totally chaotic in multiplayer mode for clients, but only clients. Including in the newest patch 0.10.5. Only the host can drive, it's impossible for others. We also tried several combination : change host, client who built first etc.. With the same result. Quite surprised to not see anyone related this issue except above me, because it did it for each of our game for some times now (>= 0.10.2.0 for sure).