Why are Regions in a locked grid Panels?
Is there any technical reason why each region within a LockingGrid is a Panel subclass which is layout: 'fit' and which contains a Grid, rather than each just being a Grid?
Go to https://examples.sencha.com/extjs/7....n#locking-grid and do this in the command line:
Code:Ext.getCmp('kitchensink-view-grid-core-lockinggrid').getRegion('center').superclass.$className
