When I was at Boeing, a recurring problem on customer test flights was bubbles appearing beneath the outer surfaces of the laminate that covered the overhead stowbins when we did a cabin depressurisation test. Our quiet fix (whch may at least help your appearance problem), was to stick a needle into the laminate to deflate the bubble. In our case, it didn't matter where you stuck it, since air had negligible weight.
In your case, sticking it in at the low point of the bubble will at least let the water out and minimise additional water-related damage.
Take detailed photos, with measuring scales in view and a nearby element to anchor location.
Good luck dealing with the manufacturer.
Frank and Eileen
No longer RVers or FR owners