Steps to reproduce

1. Setup a horz. slider
2. Toggle the "vertical" option on-off, even together with broadcasting the "rzSliderForceRender" event

Demo: http://jsfiddle.net/nlac73/qnku3d8y/

Expected behaviour

The slider should be toggling between horizontal-vertical state

Actual behaviour

The slider does not switch back to horizontal state while toggling the option, it remains vertical.