Okay, try this:
In MaterialSlider.cs, on line ~721, there should be this:
slider.value = floatValue;
Change it to this:
if (floatValue >= slider.minValue && floatValue <= slider.maxValue)
{
slider.value = floatValue;
}
Let me know if that does what you wanted :)
~ Declan.
PS: To anyone else reading, this will be fixed in v1.1.3