My orange Witbier has is a big dark ominous bubble that I am concerned about. It's hard to see in the picture, but around the buble it looks dry like how cinnamon sits on top of water. I would normally not be concerned but in addition to this the smell has completely gone away. A few days ago when I checked the gravity it had an incredibly strong delicious smell, but today it had absolutely no smell at all, including the coriander. I checked the gravity after 5 days in primary and it was 1.020, and today it was 1.018, shooting for 1.013.