range slider: left handle can not pass right handle

range slider: left handle can not pass right handle


Actually 2 problems here:
1) when the two handles overlap, clicking on right-hand side of the
slider trail does not move the right handle. User can only click on
the left-hand side first to separate the two handles then can the
right handle be moved.
2) when dragging the left handle towards right, it can't pass the
right handle. Can we make it a customizable option so the user can
control if this behaviour is allowed? (most of the time i think it
should be allowed for a better user experience)
Hope I've made myself clear.
Thanks!