Steinberg Knobs.

Working on a new tune today.

Record a guitar track add a third party amp simulator. Twiddle some knobs. All is fine. disable plugin
Add VST Amp rack. Twiddle some knobs. Nothing happens. Knobs don’t move. get occasional jump in value. Mostly nothing though.

Try a third praty plugin. Knobs twiddle.
Try Steinberg’s tremelo. Knobs don’t twiddle.
Try Steinberg’s quadrafuzz. Knobs don’t twiddle.
Try Steinberg’s autopan. Knobs don’t twiddle.

Try a third praty plugin. Knobs twiddle.
Try Steinberg’s pingpongdelay. Knobs don’t twiddle.

Seems to only affect the stock plugins.

So that is just me then?

My writing partner now has this in Artist 9. Is there a fix, or does no one actually use the stock plugins anymore?