The EPDM (I think it is EPDM) roof on my 2004 Outfitter TC is coming unglued from whatever is underneath it. I see several areas that are lifting up. None are raised more than 1/4" but they show up....
Aside, that is the cleanest roof I've ever seen! Bravo!
No experience, but I'd just keep an eye on it and if it gets worse, some judiciously placed staples with a dab of goo over them to keep waterproof would be my plan of attack.