Inconsistent values returned by range slider

My issue appears related to previously closed ticket #5132.

Range sliders seem to return inconsistent values:

• When the left handle is dragged, the count begins at 1.
• When the right handle is dragged, the count begins at 0.
• And in cases where the handles are attempted to be dragged on top of on another, the min and max values returned are the same, event though the slider shows a range--not single point--selection.

See attached screenshot taken from the URL shared in ticket #5132 and note how 3 different sets of values are being reported for what looks to be an identical range.

Is this the intended behavior?

If so, I feel that I'll have to build an additional layer of value handling to deal with left-handle/right-handle/single-point scenarios to adjust the values accordingly and return a consistent range.