Are you sure about this being normal? Mine works fine. Quick flick of the stalk and there's enough water put on the screen to wipe off the grime. Never noticed the wiper arm getting in the way or the fluid being insufficient. It is a finer spray than I'm used to, so a particular combination of wind direction and speed may prevent it hitting the window, but I've not experienced that.It's a design fault, sorry, I meant a design feature.
I keep the wiper stalk pulled back until the wiper arm moves out of the way of the jet and that seems to put enough fluid onto the screen to clear it.