form.field.Combobox: fireChangeEvent() needs to happen once the entire afterSetValue parent chain is done #6410

Author: tobiu

src/form/field/ComboBox.mjs

@@ -447,11 +447,13 @@ class ComboBox extends Picker {
      * @param {*} oldValue
      * @override
      */
-    fireChangeEvent(value, oldValue) {
+    async fireChangeEvent(value, oldValue) {
         let me            = this,
             FormContainer = Neo.form?.Container,
             params        = {component: me, oldValue, value};
 
+        await me.timeout(10);
+
         me.fire('change', params);
 
         if (!me.suspendEvents) {