YAHOO.widget.Slider
has a bug when configured to use ticks that surfaces when the slider background element position is shifted at runtime. In particular, when the window is adorned with a scrollbar.
You can see the error and the workaround in long form on this page.
Modify the verifyOffset
method on the Slider
class prototype to more comprehensively update positional reference values.
Caveat: A full solution is still in development and may bear no resemblance to this workaround when it arrives.
-- aimed at adding/removing scrollbar