Once i played US2 Alpha 15 i added a Star then i added a Planet in the Habitable zone and then finally i added a moon around it. I tried to turn the moon to 100% water to see what will happen, nothing basically happened. But when i tried to deleted the water again, BOOM...! the clouds stays there...!
I don't really know if this is a bug or not. If it was really a Bug the please fix this as soon as possible
Regards,
Raga Khalif
P.S. sorry for my Bad English grammar I'm not USA or UK