Q:

How to periodically update TreePanel without showing the "updating..." effect?

I have a TreePanel that I needs to be updated periodically. I'm using the following code on the ViewController:
'treepanel[name="servers"]' : {
        load: function(self, records, successful, operation, node, eOpts) {
            setTimeout(function() {
                self.reload();
            }, 2500);
        }
 },

But every time it reloads, it triggers a "Loading..." message on the panel that flickers for an instant and then shows the updated data.
This is the TreePanel code:
{
                                xtype : 'treepanel',
                                name : 'servers',
                                id: 'conexao-servers',
                                title : 'Selecione o servidor',
                                flex : 1,
                                overflowY : 'scroll',
                                autoScroll : true,
                                margin : 5,
                                store : Ext.create('Web.store.Servers'),
                                displayField : 'name',
                                rootVisible : false,
                                autoLoad : true,
                                listeners : {
                                    afterrender : function(panel) {
                                        panel.header.insert(panel.header.items.lenght + 1, [
                                            {
                                                xtype : 'button',
                                                name : 'flatView',
                                                text : 'Flat view'
                                            }
                                        ]);
                                    },
                                },
                                bind: {
                                    disabled: '{treeDisabled}'
                                }
                            },

That's how it looks like:
YouTube video
Is it possible to do it seamlessly, not showing any kind of message or effect, simply updating the data?
I'm using ExtJS 5.1.

A:

Set property loadMask to false. It's a sub-property of viewConfig.
{
   xtype : 'treepanel',
   viewConfig: {
      loadMask: false
   },
   // ...
}

