TYPO3 Core

The slider wizard does not detect its width correctly when it is placed in a inactive tab in the backend. This is related to: http://www.sencha.com/forum/showthread.php?104038

Possible fix would be to override the "getRatio" in "TYPO3.Components.TcaValueSlider" which calculates the position of the handle:

getRatio : function() {
var w = this.innerEl.getWidth() || parseInt(this.innerEl.dom.style.width, 10) || this.width,
v = this.maxValue - this.minValue;
return v == 0 ? w : (w/v);
}