CB 9 Pro + jBridge + B4II minor problem

On PC Windows 10, latest CB 9 Pro, this combo works almost perfect.

Except, every time I load a new B4II VST, or load a project which contains one, I get no sound from the VST until I touch one of the B4II controls with the mouse, usually one of the rotary controls such as reverb or drive, after which it works perfectly until the next load.

I’ve been in contact with the jBridge guy who has been great, but doesn’t think it is jBridge related.

I also have NI FM7 which is also jBridged and works perfect, as do a couple of other jBridged VSTi’s.

Any suggestions?