This concerns morph sliders with a range from -100 to 100.

When the value is set at 100, a reset results in the value going to -100. Resetting again restores the value to 0.

Steps:
1. Set any morph slider with a =/-100 range to 100.
2. Reset the value by double-clicking the label (name of the morph). The value changes to -100.
3. Reset the value again. Now the value goes to 0.

Desired behavior is of course for the reset to result in a "0" value.