Subgraph Strategy with vertexProperties + project().by("field name") = crash

org.apache.tinkerpop.gremlin.driver.exception.ResponseException: The provided traverser does not map to a value: v[122908680][CacheVertex]->[PropertiesStep([example],property), TraversalFilterStep([ConstantStep(true)]), OrStep([[ClassFilterStep(VertexProperty)], [TraversalFilterStep([ConstantStep(true)])]]), PropertyValueStep][DefaultTraversal] parent[[CoalesceStep([value([PropertiesStep([example],property), TraversalFilterStep([ConstantStep(true)]), OrStep([[ClassFilterStep(VertexProperty)], [TraversalFilterStep([ConstantStep(true)])]]), PropertyValueStep]), (null)])]]