Arrgh! I’ve the official Renault windows fitted, and just noticed one of them being very unstable. I then found a large Torx screw on the floor. It appears to screw into the bracket on the door, BUT although the Torx is a machine screw and not self-tapping, it doesn’t appear to screw into anything - making me think it needs to screw into a nut somewhere to make it captive.
As I’ve not got any install instructions, does anyone know for sure?