There's a very good chance it's Dicor self-leveling lap joint sealant that they used from the factory. If so (it's kind of like used chewing gum consistency when cured), you can touch it up by cleaning the area thoroughly and putting a bit more on top.
It would be wise to check all the caulked seams and cutouts and edges while you're at it and deal with any that show signs of cracking (more than slight surface cracking, at least) or pulling away or otherwise have issues. This is a typical once or twice a year maintenance item.