The slide roof is pulling off mine too, but nothing shows on the inside, yet.
The roof is just glued on rubber, including where it turns vertical.
The fix is a length of fiberglass that is attached to the backside of the flange, over the rubber, holding it down.
I bought the parts from Entegra, under $200, and will install them someday.
Installation will require detaching the outer edge of the topper and flipping it onto the roof.
I'll also need some sort of really short power screwdriver to get in there.
Jim and Carol, plus furrballs Riley, Nikko, and Kobi
2017 Entegra Aspire, 2008 Monaco Knight, 2000 Fleetwood Pace Arrow