unfortunately the glass is secured to the regulator with this piece of plastic.



once it snaps and if you keep pushing the window button, the jerking can cause the glass to dislodge from the window regulator. once the glass is dislodged, it can get caught internally which may explain the door handle movement. bad choice of material. it should be made of something more robust than plastic.

it is better to avoid pushing the window button as this can cause the wirerope to jump groove and ruin the entire regulator. further the motor gear may also get worn off by the wirerope. otherwise, replacing just this piece of plastic that holds the glass to the regulator is cheap and a straightforward diy. even replacing the regulator is quite straightforward. however, the motor will be costly.

good luck.