Kolbe&Kolbe

This year I moved into a new condo in a new building. The windows in my unit are Kolbe & Kolbe. I have never been able to open one of the windows, which is jammed shut. The problem seems to be three or four metal strips that are coiled up and lodged in one of the window tracks on the side of the window.

I wonder about the nature of the metal strips coiled up in the window track, especially since I am the first occupant of the unit and have never opened the window. Could the coiled up metal strips represent some kind of breakage that occurred during installation? Or do they function to protect the window during shipping and simply need to be removed from the window track?

The realtors who sold me the condo have not been helpful at all in this matter. Does anyone have any idea what these metal strips are doing coiled up in the window track? Many thanks if you can help!