Should probably remove by userid?

[ErikWahlstrom]

Seems like this line will not remove anything (the key is userId not ConnectionId)

project-oagents/samples/support-center/src/backend/SignalRHub/SupportCenterHub.cs

Line 19 in 2a6be43

SignalRConnectionsDB.ConnectionByUser.TryRemove(Context.ConnectionId, out _);