Apache Jena: adding GraphNode (N3 formula) to Model (ARQInternalErrorException)

Question

I'm attempting to add a Graph node to a Model (N3 formula)

The output should be roughly like the below:

<http://localhost:8080/patches/#cf0ba48fa8b0421c8b025c3ea6b41a4f>
        a       <http://www.w3.org/ns/solid/terms#Patch> ;
        <http://www.w3.org/ns/solid/terms#patches>
                <http://example.com/#me> ;
        <http://www.w3.org/ns/solid/terms#inserts> { http://example.com/#me http://example.com/#property http://example.com/#resource } .

Note that the #inserts property here is a "GraphNode" or N3 formula, I'm modelling a graph of the triples to write when a Task is complete

I tried the code below:

Model out = ModelFactory.createDefaultModel();
out.add(endState, SolidTerms.inserts, out.asRDFNode(NodeFactory.createGraphNode(inserts.getGraph())));

but this throws [org.apache.jena.sparql.ARQInternalErrorException: Unknown node type: {http://example.com/#me @http://example.com/#property http://example.com/#resource}]

I've tried many other ways of putting the Graph in the model with no success, posting this one because it was my first and I think the most rational. Maybe it's a bug or Jena just doesn't support the GraphNode type in RDFNode ?

The @ in the output puzzled me a bit, but I checked that it's not included in my property definition, it's maybe added in by the createGraphNode or the error serialization