Hi,
There is have an bug in resizing locked column.
When i resize locked column, in firebug show me an error:
Tested on FireFox 19.0, IE 10, Google Chrome 25.0.1364.97
On This Function:Code:TypeError: Ext.util.CSS.getRule(...) is null
Attachment 42138Code:field.editorMargin = p = Ext.Element.parseBox(Ext.util.CSS.getRule('.' + Ext.baseCSSPrefix + 'grid-cell-inner').style.padding);

