Ext.define('Ext.theme.triton.grid.column.Column', {
    override: 'Ext.grid.column.Column',
    
    compatibility: Ext.isIE8,
    
    onTitleMouseOver: function() {
        var triggerEl = this.triggerEl;
        
        this.callParent(arguments);
        
        if (triggerEl) {
            triggerEl.syncRepaint();
        }
    }
});