I've printed tons with version 2 and have only seen the "missing thin wall" problem. But now, with the latest version, I am wasting a lot of plastic. I noticed where much larger sections of the model is missing. So much is missing that parts are falling off the model.
In the attached picture, the gold number were deeply embedded into the base, but an air gap was printed all around it, and the supports holding the white piece are actually U shaped to so the white part fits down inside the fork. but as you can see, the bottom part of the U and the joint are simply missing. The model is designed to be very strong, but it is falling apart.