A new panel like the Properties panel where Revit will list all the constraints affecting the current selection with a little 3D viewer next to it where you can quickly rotate the selection to examine how any constraint you highlight in the list is affecting it.
![constraints panel.gif constraints panel.gif](https://forums.autodesk.com/t5/image/serverpage/image-id/1185591i668567BC158F6118/image-size/large?v=v2&px=999)