Element.Position.Rotation.Mirrored Broken?

Same file, same script, but it’s broken this week.
Element.Postion.Rotation.Mirrored is returning null for anything I put into it.
Element.GetLocation is perfectly happy with same inputs.
does anyone have any suggestions? Is there another node that returns rotation?

Ok, I found the Bakery package and the node bv Get Element Rotation works, so I have a solution. Curious why the other node broke…