We had a bubble in our floor in the bathroom as well. Didn't notice it when we picked up the unit but after our first time out. Dealer fixed it no problem. It was fairly close to a floor vent so they pulled off the cover, put in some glue and rolled it out toward the vent. Looks great and never an issue again.
Randy and Patty
2015 Sabre 33 CKTS-6 Platinum Edition
Reese 16K Slider hitch
2015 GMC Sierra 3500HD diesel dually