I wonder about the Mosaic myself as the few times I used them as late additions, I noticed a different, not bad, flavor.
So, I made an all Mosaic IPA that I hope to test this weekend but the test taste when I kegged it also displayed something I'm not use to.
I've read that many have felt the same way.But, I would think the water would have more to do with it than the Mosaic since they were very late and dry hop additions only.