You need to set queryMode: 'local'
in the combo box. Minimal example:
Ext.onReady(function() { var store = Ext.create('Ext.data.Store', { alias: 'store.ModeStore', autoLoad: false, fields: [{ name: 'mode', type: 'string' }, { name: 'id', type: 'string' }], data: [{ mode: 'mode1', id: 1 }] }); var container = Ext.create('Ext.form.field.ComboBox', { renderTo: Ext.getBody(), displayField: 'mode', valueField: 'mode', store: store, queryMode: 'local' }); store.add({ mode: 'mode2', id: 2 }); });
source share