Had a thought last night about this and ran a little experiment on my lunch break. I thought that it might have been due to Revit preventing people from editing an in-place mass without opening the “edit in-place” command. Dynamo won’t run much of anything for me when I start that command. Sadly it’s also non-responsive when I was in an conceptual mass family.
So i tried wiring in an element.location node to the reference point and found some odd results - namely i’m getting a FALSE result for “Has Location”
This occurs even though the location is clearly listed in the watch node for the element and it clearly has a point as we can create geometry for and by it… I would water that these problems are linked. Sadly my python and API knowledge aren’t advanced enough for me to confirm in the time I had available, and likely are nowhere near far enough along to fix the issue at hand.