There should be an option to prevent users from accidentally changing the number of degrees/spans when multiple surfaces are selected. This becomes an issue when an object is selected (for this example, let's say it's an engineered part with material thickness that can often have surfaces with lots of different spans/degrees) and the user wants to turn off the Isoparm Display. One accidental click just above the "U" and "V" will lock or crash Alias. A simple solution would be to remove the ability to click and change the degree or span boxes when more than one surface is active.
