I have a '15 qbss with a 2004 silverado z71 as a the tow vehicle. I noticed that situation as well luckily I noticed it just before impact. I thought maybe I was just unlucky but it sounds like it may be a problem the designers didn't take Into account when they changed to the bullet front ends.
One other thought of where we need to be careful is going over Uneven terrain. If we are turning and the terrain pitches the trailer towards our vehicles it will leave a mark.
They will probably fix the issue in later models. Not sure where that leaves us though.