My configuration:
Toshiba1 - Toshiba M4 1440x1050x32bit screen (primary) + 2048x1536x32bit screen (secondary)
Toshiba2 - Toshiba M4 1440x1050x32bit screen
When I connect to Toshiba1 from Toshiba2 and switch to the "Show both primary and extended screens of the server simultaneously" mode, I can scroll the screen in every direction placing the mouse cursor over the edge of the screen. The problem is that if I move the mouse cursor to the left edge of the screen, the screen sometimes doesn't scroll. It looks like the "scroll left" area that UVNC sets for screen scrolling isn't covering the entire edge of the screen. Let me visualize this on a picture:
