I think the new MCP might have a bug somewhere. I have not been able to find out the exact sequence on how to provoke it, but I have to restart the application more often than I used to, and it's not good enough to just reset anymore. It seems like a disconnection is happening somewhere, as the cursor just spins for long periods.
You should also update the "Attribute value" pane when moving from node to node inside the "Service Discovery" tree - using the keyboard. The handles and values are only updating in response to mouse clicks, so if you highlight another node in the tree with the keyboard, you would assume that you are reading and writing the values of that, and not the last clicked (well, I would :-) .
