Github user krlohnes commented on the issue:
https://github.com/apache/tinkerpop/pull/838
I'm definitely still missing something around serialization. All of the
traversals that are failing in the gryo side of things work in the console. I'm
fairly unfamiliar with that part of the code, but I'll look a bit this weekend
if I have some time. If someone more familiar with it sees something obvious
I've missed, let me know and I'm happy to add it. ---
