Hi, Greolt
This is a work around, go to Start, Control Panel, Display, Settings, change your Screen Resolution to 1152 by 864, Apply, OK, close control panel.
Mach3, Un-check the Auto Screen Enlarge, Restart mach3, this will give you a border on bottom and right side of screen, it reduces your view but will let you see all your Button's.
That's what I'm do-ing
Just a thought, Chip