In case of selecting the structure changes button, if there's not structural changes at all, it will still draw a thin line with the color green (and another one with red) with the height 0 (because 0 is returned).
If it's a real bug then they should not exist or if we want to keep them we should give them a different color (or anything else to distinguish them from the really small values).
In case of selecting the structure changes button, if there's not structural changes at all, it will still draw a thin line with the color green (and another one with red) with the height 0 (because 0 is returned). If it's a real bug then they should not exist or if we want to keep them we should give them a different color (or anything else to distinguish them from the really small values).