Long time watcher, first time poster.
Firstly, thanks to all the great contributors, this is a great source for learning.
I have been successfully using archi-lab.net Door Set handing node for several projects. My current project includes grouped interior walls together with doors. With this setting Door Set handing node returns null in all handing categories as if there are no doors in the project. When placing ungrouped doors in the project, the result is the same. Node works in clean project. What could be the cause of this?
Using dynamo 2.3, Revit 2020.2.1