Fixed #5618 - AutoComplete: Enter does not submit form

components/lib/autocomplete/AutoComplete.vue

@@ -617,10 +617,10 @@ export default {
         onEnterKey(event) {
             if (!this.overlayVisible) {
                 this.focusedOptionIndex = -1; // reset
+                this.onArrowDownKey(event);
             } else {
                 if (this.focusedOptionIndex !== -1) {
                     this.onOptionSelect(event, this.visibleOptions[this.focusedOptionIndex]);
-                    event.preventDefault();
                 }
 
                 this.hide();