ExtJS 4.0.2a Window Header Styling - extjs

So we've "updgraded" to ExtJS 4.0.2a.
I'm trying to create a simple window with a fieldset that has three inputs, and hides on close (as I've done with 4.0.1).
addModWindow = Ext.create('Ext.Window',{
title: 'Title',
frame: true,
width: 500,
height: 200,
closable: true,
closeAction: 'hide',
layout: {
type: 'fit',
align: 'center'
},
defaults: {
bodyPadding: 4
},
resizable: false,
items: [{
xtype: 'fieldset',
labelWidth: 75,
title: 'Rule Values',
collapsible: false,
defaults: {
anchor: '100%'
},
width: 490,
items: [typeComboBox,ruleTextBox,notesTextArea]
}]
});
typeComboBox, ruleTextBox, notesTextArea are defined just above this block and don't seem to have any issues (as I've removed the items and still have this same problem).
When the window is shown, the window body and close box render correctly, but the window's header is now transparent and has minimal styling (font-family). I've attached the screen caps from FF4, IE8, and Chrome.
Has anyone else seen this problem and found how to get rid of the transparency? In IE8 when you move the window, you can see the correct styling of the window header, which leads me to think that the css classes aren't getting applied correctly.
In FF4:
In IE8:
IE8 Move:
In Chrome:

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{
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scrollbar should be removed and the textarea height should auto increase
When you use grow:true in textareafield you have to adjust its height using growMin and growMax, in your case you are setting a height using flex:2
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Here's a fiddle to demonstrate:
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If I disable MapPanel on showing popup, resize works well, but that's not what I want. I want to display a modeless popup.
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var mapPanel = Ext.ComponentQuery.query('viewMapPanel')[0];
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title: 'I love Maps',
collapsible: true,
animCollapse: true,
maximizable: true,
width: 950,
height: 600,
minWidth: 200,
minHeight: 200,
layout: 'fit',
items: [{mapPanel}],
dockedItems: [{
xtype: 'toolbar',
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ui: 'footer',
layout: {
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},
items: [{
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}]
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http://jsfiddle.net/nxSmS/
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How to create a split region with autoheights in ExtJS

I would have thought this would be quite simple. alas it seems nothing about ExtJS is simple.
I need to split the center region of a border layout and have both the top and bottom panels fill the center region when the page resizes.
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Here's the code generated using ExtJS Gui Builder
/* This file is created or modified with
* Ext.ux.guid.plugin.GuiDesigner (v2.1.0)
*/
{
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split: true,
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split: true,
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Your center region should have some type of layout specified. You could "split" it by giving it layout: 'border' and giving it a center and a north/south panel. However, to mimic an "auto height" type of layout, you'd probably want to go with a vbox layout (Ext 3.x) with two child panels that each stretch to take up 50% (or whatever you want) of the space.

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