You just want to show off that you got yourself an iPad Pro :-)
It is not clear what the X is, is this a field? It looks slightly shifted on the Air and a lot shifted on the Pro, whyle the X seems
to be in place.
If it is a field, I would try to recreate it and see if it behaves better, kopie the one next to it which seems to do well.
If it is a button or a picture, try to remove it from the layout store the layout and put it back, might solve it, or make it smaller, move it around until it stays in place.
Hope that helps.
I found the problem, I worked on the wrong model
sorry to disturb