I find it some years ago, on LAVA 1.0,
I have the same bug (ƒCƒxƒ“ƒg“o˜) on clusters...
You are right for the registering process, a little bit frustrating .... i don't know another way, NI Library uses the same registering node.
If you put the string '-' for the name, you can add an horizontal BreakBar, (as for Ring)
You can distinguish items with the 'NotifyIcon Ref' property : 'Text'
I hope it helps.