[TIMOB-7910] MobileWeb: Truncated text in FireFox with width:'auto'

Problem

When using width:'auto' to define the width of a Ti.UI.Label` in a mobileweb project, the text of the label is often being truncated when rendered in FireFox, version 10.0.2 in my case. This does _not_ occur in Chrome (17.0.963.56) or Safari (5.1.2).

Test Case

var win = Ti.UI.createWindow({
	backgroundColor: '#fff'
});
var label = Ti.UI.createLabel({
	text: 'default text',
	height: 'auto',
	width: 'auto'
});
win.add(label);
win.open();

Results

The above test case will show only the word *"default"* in FF 10.0.2, but shows the full text *"default text"* on Chrome and Safari.