Bug in chrome and javafx

The trigger('updateHeight') doesn't work in my web app when I'm using it in chrome or the javafx browser but is ok in firefox. (It works with a simple example.)
I could solve it by changing the setHeightAndOverflow function by setting again the lineheight (because it was NaN).

``` javascript
function setHeightAndOverflow(){
lineHeight = parseInt($textarea.css('line-height'), 10) || parseInt($textarea.css('font-size'), 10);
var cloneHeight = $clone.height();
var overflow = 'hidden';
var height = hasBoxModel ? cloneHeight + lineHeight + heightCompensation : cloneHeight + lineHeight;
if (height > maxheight) {
height = maxheight;
overflow = 'auto';
} else if (height < minheight) {
height = minheight;
}
if ($textarea.height() !== height) {
$textarea.css({'overflow': overflow, 'height': height + 'px'});
}
}
```

Regards

Start by locating setHeightAndOverflow and reproduce trigger('updateHeight') in Chrome and the JavaFX browser, comparing the result with Firefox. Check the lineHeight value and the resulting textarea height; done means the update behaves consistently across the reported browsers without breaking the simple example.

Written by the indexing model from the issue text.