2016 Fabia Monte Carlo here. I had this issue on both windows after picking it up new a month or so ago. Tried lubing up the weatherstrips as recommended here with not much luck. After looking a little more into them I saw that one of the weatherstrips had folded over about half way along and was rubbing, causing some noise. Pulling it back into place fixed that side thank god. The other window had the noise coming from from somewhere else, deeper in the door, so I had the door card off to see what was what. In the end, it sounded like the noise was coming from the front rail of the window regulator. The fix I found was to get in through one of the bung holes inline with the regulator rail and spread (admittedly a little too much) red grease on the rail and slider, running it up and down 10-15 times. It's not come back yet, so knock on wood I think that's fixed it.