I think he means the span.x-button-label. That one is overflow: hidden by default and it is inline or inline-block iirc, so setting a height property would not change anything.
To get simpler..
in structure of the app i need to make an app to change the card directly from a delegate: 'a.proxPed',
but i cant put the controller to delegate, where i need to call the function Ext.Viewport.setActiveItem(this.getPedigreePage ());
so, i change the way, i'll take a background on a simple button, but i get this bug of height.
has some way to associate the delegate with the controller?