In the Import Image dialog once we have specified the image to import, there is a threshold slider below the image, as well as a spinbox to the right of that slider which indicates the value of the threshold.
If the slider is moved, the spinbox value changes. If the spinbox value is changed by the up-down buttons of the spinbox, the slider gets moved. In both cases, the traced image is adjusted appropriately.
However if we change the value of the spinbox by manually typing in the value we desire, the slider does not move, and the traced image is also not adjusted appropriately.
Using FC 6.5 build 270.
Thanks.