Are all servers supposed to receive calls to server-side methods when using Redis backplane?

[dejancg]

... because they don't.
I searched around the web in order to get a definitive answer to this question, but no luck.

Expected behavior

When clients call server-side methods using Redis-backed SignalR, I expected all servers to be notified of this call.

Actual behavior

Only one server gets the call to a server-side method.

Steps to reproduce

Define a server-side method on a hub and use Redis as a back-plane. Then, from a client, call this server-side method, and observe that it's only being called on one of the servers.