RDM Jump server within a Jump server

Hello,
I'm running RDM on my workstation, and we've setup an RDM Jump server successfully for some environments.
Now due to security reasons, some other environments are on even 'further' networks so I've tried to setup a jump server within a jump server.
Don't know if that is supported, but initially it doesn't seem to work.
So I'm successfully connecting a remote management server through a jump server, installed RDM and the agent on that one, configured that one as a jump server itself, and had a new connection using this last jump server.
When trying to connect nothing seems to happen. Was distracted for a short while, then came back and the whole tree seems to have crashed with lots of RDM Agent error screens on top of each other...

What's the verdict on this? Is that considered a bug or not supported ?

Note that I'm using an Ent version that I've bought personally in the past, and we're now evaluating the ENT trial version for our company in the hope to make use of it with our whole team. This is one of the scenarios we sometimes need...