Here's something that's happening as I adjust the UV offset of some faces: Note that the upper faces move in the opposite direction as the lower faces. What causes this? If I select the lower faces and choose "Flip U", then everything lines up perfectly. But those properties are very fragile. (If I later select two faces, one that has Flip U and one that doesn't, Flip U gets unchecked on all faces.) Is there a way to tell ProBuilder not to flip the faces like this, while still using Auto mode?