I’ve tried View3D.SetSectionBox and it doesn’t work.
My approach is to use a Scope box for overall boundingbox corners.
Testing with boundingbox of an element doesn’t work either:
Nor does built-in node AxonometricView.ByEyePointTargetAndBoundingBox:
I’m using Revit 2017.2 and Dynamo 188.8.131.5283.
It seems something deep has changed. Maybe the Revit API?
I’ve posted an issue on dynamo github site no response yet.