I feel like I'm missing a setting somewhere. Selecting a node in the Tree View seems to only highlight the node in the network pane and little else. The Parameter pane doesn't change unless I actually click on the node in the network pane. Is it supposed to work like that?
The only place I could think of that might have a setting to cause your behaviour is something in ‘Network Editor, Nodes and Trees’ section of Preferences.
But I don't see anything there.
The only way I can ‘get’ your behaviour is if I pin the parameter pane in question.