Yes sadly its on all as far as I know, though varies set to set. This is why you need to see it for yourself and go to a good dealer who's willing to setup the one you buy so you can check it. I went to the TPS meet and it was bad on one ST50 but the other sets I had to look for it, one I only noticed it when shown where it is. It is being looked at but there's no guarantee of a solution.