Ok i can see now. It is always true that a picture worth a thousand words.
1- For the menu width, i will try to squeeze in the horizontal direction as much as possible...
2- For the F4 button issue, it is because the button appears at the left bottom corner of the S&T map on the screen. If you cover it with anything else, there is no easy way to find this. What make it more complicated is that user can use any custom OSK i cannot imagine with different look. So very difficult to deal with that one. If most user prefer to have the OSK at the bottom of the screen, i can swapt the F4 touch button to the upper left instead of bottom left, or make the position configurable. This is the easiest solution i can see. Probably configuration for the button position (at least two choices bottom and top left), would be my actual proposal (with top left the new default button position?)...
What do you think of this?