Since adding a new flat screen monitor to my set up my poser mat room has developed a quirk.

The right hand arrow, which should show the options for copy and paste mat to various material zones now shows the mat zones instead.

This is most frustrating as I make my mat poses with shader spider.

Does anyone have any idea what I have done to get this problem, and how I solve it, please?

I am fairly new to P6, hung on to my old P4 until it was just no longer viable.

The greatest part of wisdom is learning to develop  the ineffable genius of extracting the "neither here nor there" out of any situation...."