In 2018.3.0b7, if you turn a UI element (such as Text) into a prefab, there appears to be no way to synch the prefab and the instance for properties like height and width. If you modify the RectTransform in the scene, there is no option to apply the change to the prefab (no properties show as being overridden or allow reversion to prefab as in previous versions of Unity). Conversely, if you modify the RectTransform If you modify the RectTransform in prefab mode (e.g. change the height or width), the scene does not receive the modification unless you remove the prefab and place it again (which was unnecessary in previous versions of Unity). Is this a bug (instance of RectTransform not updating based on prefab, nor acknowledging overrides, nor allowing reversion)? Or is it a workflow regression (having to re-instantiate the prefab to see the updates)? Or both?