There is definitely a bug in T3000 regarding setting of Units (Range) for variables. When setting Units, the pop-up includes a “default” option - with arrow and radio button pre-selected (see screenshot).
In this example, the previous selection was 19, but the button is black for 8.
However, this “black” button (8) is not actually pre-selected. If you click OK it continues with the predefined 19. If you actually want to change to 8 you have to press the black radio button (again) - to see the definition at top change, then press OK.
I think it would be better to either show the current selection as a black radio button with arrow, or not show any black buttons or arrows.
