If you hold down Alt and press right mouse button to rotate the paper, Artrage samples the color at the same time as you rotate the paper it also if you don't move the mouse hides the menus. So if you draw with a black pen on white paper and rotates the paper and then continue to draw you suddenly have a white pen instead of a black, very annoying.
Please make it work as it should.
Alt+leftmousebutton = samples color
Alt+rightmousebutton = rotates paper (no sample of color or hide menus)
rightmousebutton only= hide menu (No hiding if alt,shift or ctrl is pressed down at the same time)