Merge pull request #4762 from qburst/4749--fix-incorrect-reference-va…

…lue-display

fix: #4749 || fix incorrect reference value display

components/lib/autocomplete/AutoComplete.vue

@@ -884,7 +884,7 @@ export default {
             return this.optionGroupLabel ? this.flatOptions(this.suggestions) : this.suggestions || [];
         },
         inputValue() {
-            if (this.modelValue) {
+            if (ObjectUtils.isNotEmpty(this.modelValue)) {
                 if (typeof this.modelValue === 'object') {
                     const label = this.getOptionLabel(this.modelValue);