For now enableUnboundedMouseMovement (with hidden cursor) is set when the slider is in velocity mode.
Would you consider to always set it for linear sliders that are not snapping to mouse position (setSliderSnapsToMousePosition (false)) ?
Cause in this case, it’s not a 1:1 movement with the mouse.
so that would be adding something like that in handleAbsoluteDrag() :
if (! snapsToMousePos && (style == LinearHorizontal || style == LinearVertical || style == LinearBar || style == LinearBarVertical))
{
e.source.enableUnboundedMouseMovement (true, false);
}