I have to agree sorry to say, factory, but dealer should have at the very least tied to clean it up before putting on their lot ... On your PDI I would have ask to have it cleaned up or attempt to have it cleaned up, what a mess Ugh ...
G384RLT The Palace Ford F350 CC LB DW 4x4 [br]Amateur Radio call W5KAV
I suspect if you checked any roof you'll find that. Like you said out of site out of mind and no leaks. Almost every opening on my roofs like that, but it does not leak. I even had the top satellite fitting covered as I'll never use it so no chance of leaking.
2017 Durango Gold G353RKT 2015 F350 Lariat CC SRW 4X4FX
Our 2014 Spree Escape roof corners look like that too. Discovered it leaking this year. Got off as much as I could and put Dicor lap sealant on it. From reading here it sounds like I probably should put some eternabond tape over that too.