I had the same issue, turned out to be a plastic clip on the regulator, it had snapped and swiveled down so the window would still operate but stopped an inch or two from the top. I would recommend taking a look at the regulator, they are pretty easy to get out (easier than the w126 jaws type for sure)

__________________
TC
Current stable:
- 2004 Mazda RALLYWANKEL
- 2007 Saturn sky redline
- 2004 Explorer...under surgery.

Past: 135i, GTI, 300E, 300SD, 300SD, Stealth