Can REFRESH automaticaly update window?

The VSE windows have a Refresh button to clear and update image buffers. Is there a script or function that forces these windows to redraw (interactively) rather than pressing the button all the time?

The windows update when you make a change in the VSE timeline (say dragging a strip along) but not when you make a change to a scene that is used as a stip in the timeline (eg. using Compositor to alter an image).