w124 rear window stoppping before top

I recently got my windows tinted, and today is the first day I have rolled them down in three weeks.

When I rolled them up, the driver's rear window was balky at first. I worked with it, and finally got it moving, but now, it stops about an inch from the top. It does not seem to stick there, but acts as if that is just where it is supposed to seat. Roll it down, goes all the way, no problem. Roll it up, seats about 1" from top.

Anyone know what is going on?

Jack
93 400e