sproutcore/sproutcore — pull request #618 by rvalle (2011-10-18 14:26:14+00:00)
Title: Fixes slider: it doesn't work under some circumstances.

fixed slider handle: the slider handle is wrongly presented as 0 because under some circumstances frame.with is 0, and this is used to calculate its position.

The issue can be reproduced by setting the view to Hidden while the slider value is updated or for controls rendered in staticLayout views.