Hi all,

I don't know if it was stated before, bud there's a bug with bufferedrender plugin when you have a treepanel in a tab for example, and it is hidden becouse another tab is the current one, if you collapse any node by another component or just by code, an exception is trown, this happens becouse a resize is fired and there's a division by 0 in the onViewResize method resulting in a NaN value, so after this the grid or treepanel stops working.


Look in this fiddle, then collapse any node in any tab (they share the store):

http://ift.tt/1hGk31j


This overrides solves the problem:



Code:



Ext.override(Ext.grid.plugin.BufferedRenderer, {


    //listen to panel show to refresh
    init: function(grid) {
        var me = this;
        me.callParent(arguments);
        me.grid.on('show', me.onViewRefresh, me);
    },


    //if it is hidden do nothing
    onViewRefresh: function() {
        if(this.grid.isHidden()) return;
        this.callParent(arguments);
    },


    //release the listener made on the override
    destroy: function() {
        var me = this,
            grid = me.grid;


        if (grid) {
            grid.un('show', me.onViewRefresh, me);
        }
        this.callParent(arguments);
    }
});