Since my earlier bug report was CLOSED, so am starting a new thread, with little more info on it

cellclick event in locking grid do not respond.

I think it is a similar issue as
EXTJSIV-3775 : 'itemclick' event doesn't bubble when using locking grid

cellclick event is not documented, this raises a doubt if it will be supported in future versions?


Test case
Code:
Ext.onReady(function() {
    Ext.QuickTips.init();


    // sample static data for the store
    var myData = [
        ['3m Co',                      71.72, 0.02,  0.03,  '9/1 12:00am'],
        ['Alcoa Inc',                  29.01, 0.42,  1.47,  '9/1 12:00am'],
        ['Altria Group Inc',           83.81, 0.28,  0.34,  '9/1 12:00am'],
        ['American Express Company',   52.55, 0.01,  0.02,  '9/1 12:00am'],
        ['American Group, Inc.',       64.13, 0.31,  0.49,  '9/1 12:00am'],
    ];


    var store = Ext.create('Ext.data.ArrayStore', {
        fields: [
           {name: 'company'},
           {name: 'price',      type: 'float'},
           {name: 'change',     type: 'float'},
           {name: 'pctChange',  type: 'float'},
           {name: 'lastChange', type: 'date', dateFormat: 'n/j h:ia'}
        ],
        data: myData
    });


    // create the Grid
    var grid = Ext.create('Ext.grid.Panel', {
        store      : store,
        selType    :'cellmodel',
        columns: [{text:'Company', width:200, dataIndex:'company',locked : true },
                  {text:'Price'  , width:125, dataIndex:'price'    },
                  {text:'Change' , width:125, dataIndex:'change'   },
                  {text:'%Change', width:125, dataIndex:'pctChange'},
                  {text:'Updated', width:35,  dataIndex:'lastChange'}],
        height: 350,
        width : 600,
        title : 'Locking Grid Column',
        renderTo:'grid-example',
    });
});

grid.on(  'cellclick',
          function(){
             console.log(arguments);
          },
          this
       )