W140 - 95 S420 window express up
All windows go down with the one-touch feature. The back windows go all the way up with the one-touch feature. The front windows go about two-thirds of the way up then go back down and stop at the halfway point. It does that with subsequent taps of the one-touch button. If I stay on the one-touch button to about the three-quarter up point, the windows close. All windows work predictably using the first switch detent.
Is this normal? Why the seeming safety feature in front and not in the back?