Is it possible to enable the dual monitor functionality that existed in XnViewMP v. 0.89 that allowed full screen on both monitors simultaneously? The way it worked was that I could open a full screen mode on two monitors, and navigate prev / next images on each screen individually using the mouse scroll wheel hovered on a given screen, or with keyboard arrow keys. Arrows keys worked on the screen that was currently in focus, and I could change which screen I wanted to focus by clicking it with the left mouse button.
Could we bring back that functionality? Perhaps you could add a new shortcut, e.g. Shift+F11, that opens full screen on the main monitor without closing full screen on the 2nd monitor, and allow navigation between images on each screen individually as it used to work in 0.89.