fix select

src/components/select/select.vue

@@ -44,8 +44,6 @@
                     @on-input-focus="isFocused = true"
                     @on-input-blur="isFocused = false"
                     @on-clear="clearSingleSelect"
-
-                    @on-keydown="handleFilterInputKeyDown"
                 />
             </slot>
         </div>
@@ -266,7 +264,7 @@
                 unchangedQuery: true,
                 hasExpectedValue: false,
                 preventRemoteCall: false,
-                filterQueryKeyDown: false,  // #4273
+                filterQueryChange: false,  // #4273
             };
         },
         computed: {
@@ -296,12 +294,6 @@
                     [`${prefixCls}-selection-focused`]: this.isFocused
                 };
             },
-            queryStringMatchesSelectedOption(){
-                const selectedOptions = this.values[0];
-                if (!selectedOptions) return false;
-                const [query, label] = [this.query, selectedOptions.label].map(str => (str || '').trim());
-                return !this.multiple && this.unchangedQuery && query === label;
-            },
             localeNotFoundText () {
                 if (typeof this.notFoundText === 'undefined') {
                     return this.t('i.select.noMatch');
@@ -368,10 +360,6 @@
                         });
                     });
                 }
-                /**
-                 * Not sure why use hasDefaultSelected #4273
-                 * */
-                let hasDefaultSelected = slotOptions.some(option => this.query === option.key);
                 for (let option of slotOptions) {
 
                     const cOptions = option.componentOptions;
@@ -395,7 +383,7 @@
                         if (cOptions.children.length > 0) selectOptions.push({...option});
                     } else {
                         // ignore option if not passing filter
-                        if (!hasDefaultSelected || this.filterQueryKeyDown) {
+                        if (this.filterQueryChange) {
                             const optionPassesFilter = this.filterable ? this.validateOption(cOptions) : option;
                             if (!optionPassesFilter) continue;
                         }
@@ -405,8 +393,6 @@
                     }
                 }
 
-                this.filterQueryKeyDown = false;
-
                 return selectOptions;
             },
             flatOptions(){
@@ -479,8 +465,6 @@
             },
 
             validateOption({children, elm, propsData}){
-                if (this.queryStringMatchesSelectedOption) return true;
-
                 const value = propsData.value;
                 const label = propsData.label || '';
                 const textContent = (elm && elm.textContent) || (children || []).reduce((str, node) => {
@@ -545,6 +529,7 @@
                 this.focusIndex = -1;
                 this.unchangedQuery = true;
                 this.values = [];
+                this.filterQueryChange = false;
             },
             handleKeydown (e) {
                 if (e.key === 'Backspace'){
@@ -644,11 +629,15 @@
                     if (!this.autoComplete) this.$nextTick(() => inputField.focus());
                 }
                 this.broadcast('Drop', 'on-update-popper');
+                setTimeout(()=>{
+                  this.filterQueryChange = false;
+                },500)
             },
             onQueryChange(query) {
                 if (query.length > 0 && query !== this.query) this.visible = true;
                 this.query = query;
                 this.unchangedQuery = this.visible;
+                this.filterQueryChange = true;
             },
             toggleHeaderFocus({type}){
                 if (this.disabled) {
@@ -664,13 +653,6 @@
                     this.hasExpectedValue = true;
                 }
             },
-            /**
-             * 下面的方法，当 filterable 时，输入内容时，标记，用于区分和直接选择而引起的 bug
-             * #4273
-             * */
-            handleFilterInputKeyDown () {
-                this.filterQueryKeyDown = true;
-            },
         },
         watch: {
             value(value){