GRID - Refined Search doesn't like small numbers

I have a field in my DB for “Length” that uses number with 2 decimal precision. Like 0.15 and 4.3. It goes up to about 96 with lots of various values in between.
Refined Search doesn’t like it. It will not allow me to use a range at all. The only way to use a range is for whole numbers greater than 1.

Am I missing something here or is this just the way it is?

Thanks.