What exactly do you mean by "lose control"? What are you playing the game on?

I've noticed a problem playing on PC that once in awhile half of my keyboard controls drop out. My "w/s" and "c" controls are usually what drops, but every now and then it includes the "d". Made it kind of hard to takeoff until I realized I could still get all the onscreen controls to work with my mouse.

The only solutions I've found so far are to either suffer through using the onscreen controls, or drop out and reload the game.