Is this intended?
Also now understand this
and broke one of them.
No idea how you managed that. 
Maybe have a look at this?
And this 
.
No idea (yet) how to get the Cut Profile / FaceSplitter elements in Dynamo (yet) using (OOTB) nodes.
Maybe there is a Package which can do this? If not then i guess you need a (the) Python solution.
This Node from Clockwork gives me null.
Edit
Resolved the null issue after installing the DynamoIronPython Package.
Can’t find something which looks like a Cut Profile or FaceSpliiter BuiltIn Category though.