Extjs if collapsed = true for Ext.panel.panel then expand is not taking proper width
<p>I am working with Extjs 5.1.0 version, i have two panels Panel 1 and Panel 2, the First Panel should be collapible and second one should expand if panel 1 is collapsed.</p>

<p>By default the Panel1 should be collapsed,</p>

<pre><code>collapsed: true
</code></pre>

<p>it is loading properly but when i am expanding the Panel1 it is not taking the right width.
you can observe the behavior in the below</p>

<p><a href="http://jsbin.com/hisihav/edit?html,js,output" rel="nofollow">code here</a></p>

<p>Thanks in advance</p>