Hi, I have recently bought a Honda jazz and I have just noticed that the front passengers window when raised to the top then drops couple of inches back down, I  cannot see why this happening.

I have looked in the manual, and the only reason it would normally  go down is if something was blocking the space, can any body help please.

Hi......welcome to the Forum

 

It does sound like it is an obstruction which is causing it to stop at that point.
Does it do it when the door is open and when it is closed as well?