When you click refresh in a Simulator window there is nothing in the window itself to say the request to refresh has registered. After a few moments the “generating preview” message appears in the main Rapidweaver window, but other than a small sound (which you can’t hear it the sound is off or music is playing) you have no way to know if Simulator is being refreshed.
Can you add a discreet message somewhere within Simulator ideally next to the refresh icon to say the page is refreshing? Perhaps have the refresh icon become animated or change etc.