startIndex and endIndex have the wrong values for certain indices when max index is too high

[ronenfe]

I have a CircularRangeSlider with max set to 31.

On the event onRangeRelease,onRangeChange, when I set startIndex or endIndex in the ui for the following values: It receives it as the value - 1:
16, 17, 19, 20, 23, 24, 25, 28, those bad indices can change depending on max index. I think it's because the physical distance in the graphic is too small. The thing is the ui shows the selection correctly so I think it's an easy fix.
The maximum working max value is 30. Any max set to above 30 causes this bug.

[ronenfe]

Untitled.video.-.Made.with.Clipchamp.mp4

I have made a sample project demonstrating the bug:

https://github.com/ronenfe/CircularSliderBugSample

[ronenfe]

FIxed, The bug happens when endindex is even.