it would be great if :
the reference view could work as a canvas cloned view, as an option, or to implement a separate (out of reference panel) cloned view of the canvas. (to show the same position, same zoom of the canvas)
Useful to check in real time the colors or symmetry of the canvas on an other display.
Currently the reference panel view is not centered on the canvas view in real time.
Exemple : if there is an horizontal flip in the canvas, the reference view doesn't show the same zone of the canvas, and after the horizontal flip, a clic is needed for the the reference view to be flipped as well.