Looks like a pebble got lodged between the linoleum and the slide. I looked at ours today when we took delivery and I mentioned to the service manager at the dealer about these 2 linoleum tears. He said either a screw or a pebble are common causes. So with that said, before we retract ours, the floor will get swept really well.
2015 Jayco 24FBS Elite Jay Flight
2013 Chevrolet Silverado 2500HD 4X4 6.0L 3.73 Axle
HD Trailering Package with Integrated Brake Controller
Equal-i-zer Hitch 10k/1000