I've inherited a board that's got some strange (to me) behavior. For example: normally if I turn on Layer 1 and Solder Mask Top, then make the Solder Mask Top layer the active one, it will be the one shown on "top" of Layer 1. With this board file, every layer seems to have a lower priority than Layer 1. No matter what layer I make active, if Layer 1 is turned on, it's always shown on top of the other layer. Is there a setting to change this? Thanks!