TabPanel (region: 'center') in Viewport (layout: 'border'), width is not fixed.

Was:

Code:
plugins: [{
  ptype: 'tabscrollermenu',
  maxText: 50,
  pageSize: 5
}]
Now:

Code:
plugins: [{
  ptype: 'tabscrollermenu',
  maxText: 50
}]
Error in Firebug:
g.el is undefined
(function(){var e=this,a=Object.protot...ate("Ext.XTemplate",j,g)}return j}});
In Google Chrome:

Uncaught TypeError: Cannot call method 'getY' of undefined
Ext.define.doConstrainext-all.js:15
Ext.define.showAtext-all.js:15
Ext.define.showTabsMenuTabScrollerMenu.js:147
anonymous:5
cext-all.js:15