diff --git a/CHANGELOG.en-US.md b/CHANGELOG.en-US.md
index 4334a4105..89dfca655 100644
--- a/CHANGELOG.en-US.md
+++ b/CHANGELOG.en-US.md
@@ -10,6 +10,16 @@
 
 ---
 
+## 1.6.4
+
+`2020-07-21`
+
+- 🐞 Fix breadcrumb `Breadcrumb` duplicate key problem [#2505](https://github.com/vueComponent/ant-design-vue/issues/2505)
+- 🐞 Fix the Tooltip issue when MenuItem title is empty [#2526](https://github.com/vueComponent/ant-design-vue/issues/2505)
+- 🐞 Fix the problem that Input textarea cannot be dragged up when allow-clear is activated. [#2563](https://github.com/vueComponent/ant-design-vue/issues/2563)
+- 🌟 Add less variables @select-item-selected-color [#2458](https://github.com/vueComponent/ant-design-vue/issues/2458)
+- 🌟 Add flex attribute to Col in Grid [#2558](https://github.com/vueComponent/ant-design-vue/issues/2558)
+
 ## 1.6.3
 
 `2020-07-05`
diff --git a/CHANGELOG.zh-CN.md b/CHANGELOG.zh-CN.md
index 76439cdb4..e293807c9 100644
--- a/CHANGELOG.zh-CN.md
+++ b/CHANGELOG.zh-CN.md
@@ -10,6 +10,16 @@
 
 ---
 
+## 1.6.4
+
+`2020-07-21`
+
+- 🐞 修复面包屑 `Breadcrumb` 重复 key 问题 [#2505](https://github.com/vueComponent/ant-design-vue/issues/2505)
+- 🐞 修复 MenuItem title 为空时，依然有 Tooltip 问题 [#2526](https://github.com/vueComponent/ant-design-vue/issues/2505)
+- 🐞 修复 Input textarea 激活 allow-clear 时无法向上拖动的问题。[#2563](https://github.com/vueComponent/ant-design-vue/issues/2563)
+- 🌟 添加 less 变量 @select-item-selected-color [#2458](https://github.com/vueComponent/ant-design-vue/issues/2458)
+- 🌟 Grid 中 Col 添加 flex 属性 [#2558](https://github.com/vueComponent/ant-design-vue/issues/2558)
+
 ## 1.6.3
 
 `2020-07-05`
diff --git a/antdv-demo b/antdv-demo
index 2f5ee1b6c..5ebfa3218 160000
--- a/antdv-demo
+++ b/antdv-demo
@@ -1 +1 @@
-Subproject commit 2f5ee1b6c38bdf1c54bf6c5fea8142567a45dd67
+Subproject commit 5ebfa3218ba2fb568f7cb32d2c6fda8eaf5b3c21
diff --git a/components/color-picker/__tests__/__snapshots__/index.test.js.snap b/components/color-picker/__tests__/__snapshots__/index.test.js.snap
index 128a41973..488cb5ecf 100644
--- a/components/color-picker/__tests__/__snapshots__/index.test.js.snap
+++ b/components/color-picker/__tests__/__snapshots__/index.test.js.snap
@@ -1,12 +1,12 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
 exports[`ColorPicker prop locale should works 1`] = `
-<div tabindex="0" class="ant-color-picker ant-color-picker-open">
+<div tabindex="0" class="ant-color-picker">
   <div class="ant-color-picker-selection">
     <div id="color-picker-box25">
       <div class="pickr">
 
-        <button type="button" class="pcr-button" role="button" aria-label="toggle color picker dialog" style="color: rgb(205, 2, 0);"></button>
+        <button type="button" class="pcr-button" role="button" aria-label="toggle color picker dialog"></button>
 
 
       </div>
@@ -14,20 +14,20 @@ exports[`ColorPicker prop locale should works 1`] = `
         <path d="M884 256h-75c-5.1 0-9.9 2.5-12.9 6.6L512 654.2 227.9 262.6c-3-4.1-7.8-6.6-12.9-6.6h-75c-6.5 0-10.3 7.4-6.5 12.7l352.6 486.1c12.8 17.6 39 17.6 51.7 0l352.6-486.1c3.9-5.3.1-12.7-6.4-12.7z"></path>
       </svg></i>
   </div>
-  <div class="pcr-app visible" data-theme="monolith" aria-label="color picker dialog" role="window" style="left: 512px; top: 384px;">
+  <div class="pcr-app" data-theme="monolith" aria-label="color picker dialog" role="window">
     <div class="pcr-selection">
       <div class="pcr-color-preview">
-        <button type="button" class="pcr-last-color" aria-label="use previous color" style="color: rgb(205, 2, 0);"></button>
-        <div class="pcr-current-color" style="color: rgb(205, 2, 0);"></div>
+        <button type="button" class="pcr-last-color" aria-label="use previous color"></button>
+        <div class="pcr-current-color"></div>
       </div>
 
       <div class="pcr-color-palette">
-        <div class="pcr-picker" style="background: rgb(205, 2, 0);"></div>
+        <div class="pcr-picker"></div>
         <div class="pcr-palette" tabindex="0" aria-label="color selection area" role="listbox"></div>
       </div>
 
       <div class="pcr-color-chooser">
-        <div class="pcr-picker" style="background-color: hsl(0.5853658536585238, 100%, 50%);"></div>
+        <div class="pcr-picker"></div>
         <div class="pcr-hue pcr-slider" tabindex="0" aria-label="hue selection slider" role="slider"></div>
       </div>
 
@@ -57,12 +57,12 @@ exports[`ColorPicker prop locale should works 1`] = `
 `;
 
 exports[`ColorPicker save event should works 1`] = `
-<div tabindex="0" class="ant-color-picker ant-color-picker-open">
+<div tabindex="0" class="ant-color-picker">
   <div class="ant-color-picker-selection">
     <div id="color-picker-box31">
       <div class="pickr">
 
-        <button type="button" class="pcr-button" role="button" aria-label="toggle color picker dialog" style="color: rgb(205, 2, 0);"></button>
+        <button type="button" class="pcr-button" role="button" aria-label="toggle color picker dialog" style="color: rgb(0, 0, 0);"></button>
 
 
       </div>
@@ -70,20 +70,20 @@ exports[`ColorPicker save event should works 1`] = `
         <path d="M884 256h-75c-5.1 0-9.9 2.5-12.9 6.6L512 654.2 227.9 262.6c-3-4.1-7.8-6.6-12.9-6.6h-75c-6.5 0-10.3 7.4-6.5 12.7l352.6 486.1c12.8 17.6 39 17.6 51.7 0l352.6-486.1c3.9-5.3.1-12.7-6.4-12.7z"></path>
       </svg></i>
   </div>
-  <div class="pcr-app" data-theme="monolith" aria-label="color picker dialog" role="window" style="left: 512px; top: 384px;">
+  <div class="pcr-app visible" data-theme="monolith" aria-label="color picker dialog" role="window" style="left: 512px; top: 384px;">
     <div class="pcr-selection">
       <div class="pcr-color-preview">
-        <button type="button" class="pcr-last-color" aria-label="use previous color" style="color: rgb(205, 2, 0);"></button>
-        <div class="pcr-current-color" style="color: rgb(205, 2, 0);"></div>
+        <button type="button" class="pcr-last-color" aria-label="use previous color" style="color: rgb(0, 0, 0);"></button>
+        <div class="pcr-current-color"></div>
       </div>
 
       <div class="pcr-color-palette">
-        <div class="pcr-picker" style="background: rgb(205, 2, 0);"></div>
+        <div class="pcr-picker"></div>
         <div class="pcr-palette" tabindex="0" aria-label="color selection area" role="listbox"></div>
       </div>
 
       <div class="pcr-color-chooser">
-        <div class="pcr-picker" style="background-color: hsl(0.5853658536585238, 100%, 50%);"></div>
+        <div class="pcr-picker"></div>
         <div class="pcr-hue pcr-slider" tabindex="0" aria-label="hue selection slider" role="slider"></div>
       </div>
 
@@ -113,12 +113,12 @@ exports[`ColorPicker save event should works 1`] = `
 `;
 
 exports[`ColorPicker should support default value 1`] = `
-<div tabindex="0" class="ant-color-picker ant-color-picker-open">
+<div tabindex="0" class="ant-color-picker">
   <div class="ant-color-picker-selection">
     <div id="color-picker-box1">
       <div class="pickr">
 
-        <button type="button" class="pcr-button" role="button" aria-label="toggle color picker dialog" style="color: rgb(205, 2, 0);"></button>
+        <button type="button" class="pcr-button" role="button" aria-label="toggle color picker dialog"></button>
 
 
       </div>
@@ -126,20 +126,20 @@ exports[`ColorPicker should support default value 1`] = `
         <path d="M884 256h-75c-5.1 0-9.9 2.5-12.9 6.6L512 654.2 227.9 262.6c-3-4.1-7.8-6.6-12.9-6.6h-75c-6.5 0-10.3 7.4-6.5 12.7l352.6 486.1c12.8 17.6 39 17.6 51.7 0l352.6-486.1c3.9-5.3.1-12.7-6.4-12.7z"></path>
       </svg></i>
   </div>
-  <div class="pcr-app visible" data-theme="monolith" aria-label="color picker dialog" role="window" style="left: 512px; top: 384px;">
+  <div class="pcr-app" data-theme="monolith" aria-label="color picker dialog" role="window">
     <div class="pcr-selection">
       <div class="pcr-color-preview">
-        <button type="button" class="pcr-last-color" aria-label="use previous color" style="color: rgb(205, 2, 0);"></button>
-        <div class="pcr-current-color" style="color: rgb(205, 2, 0);"></div>
+        <button type="button" class="pcr-last-color" aria-label="use previous color"></button>
+        <div class="pcr-current-color"></div>
       </div>
 
       <div class="pcr-color-palette">
-        <div class="pcr-picker" style="background: rgb(205, 2, 0);"></div>
+        <div class="pcr-picker"></div>
         <div class="pcr-palette" tabindex="0" aria-label="color selection area" role="listbox"></div>
       </div>
 
       <div class="pcr-color-chooser">
-        <div class="pcr-picker" style="background-color: hsl(0.5853658536585238, 100%, 50%);"></div>
+        <div class="pcr-picker"></div>
         <div class="pcr-hue pcr-slider" tabindex="0" aria-label="hue selection slider" role="slider"></div>
       </div>
 
@@ -174,7 +174,7 @@ exports[`ColorPicker should support disabled 1`] = `
     <div id="color-picker-box13">
       <div class="pickr">
 
-        <button type="button" class="pcr-button disabled clear" role="button" aria-label="toggle color picker dialog" style="color: rgba(0, 0, 0, 0.15);"></button>
+        <button type="button" class="pcr-button disabled" role="button" aria-label="toggle color picker dialog"></button>
 
 
       </div>
@@ -182,7 +182,7 @@ exports[`ColorPicker should support disabled 1`] = `
         <path d="M884 256h-75c-5.1 0-9.9 2.5-12.9 6.6L512 654.2 227.9 262.6c-3-4.1-7.8-6.6-12.9-6.6h-75c-6.5 0-10.3 7.4-6.5 12.7l352.6 486.1c12.8 17.6 39 17.6 51.7 0l352.6-486.1c3.9-5.3.1-12.7-6.4-12.7z"></path>
       </svg></i>
   </div>
-  <div class="pcr-app" data-theme="monolith" aria-label="color picker dialog" role="window" style="left: 512px; top: 384px;">
+  <div class="pcr-app" data-theme="monolith" aria-label="color picker dialog" role="window">
     <div class="pcr-selection">
       <div class="pcr-color-preview">
         <button type="button" class="pcr-last-color" aria-label="use previous color"></button>
@@ -225,12 +225,12 @@ exports[`ColorPicker should support disabled 1`] = `
 `;
 
 exports[`ColorPicker should support format 1`] = `
-<div tabindex="0" class="ant-color-picker">
+<div tabindex="0" class="ant-color-picker ant-color-picker-open">
   <div class="ant-color-picker-selection">
     <div id="color-picker-box19">
       <div class="pickr">
 
-        <button type="button" class="pcr-button clear" role="button" aria-label="toggle color picker dialog" style="color: rgba(0, 0, 0, 0.15);"></button>
+        <button type="button" class="pcr-button" role="button" aria-label="toggle color picker dialog" style="color: rgb(0, 0, 0);"></button>
 
 
       </div>
@@ -238,7 +238,7 @@ exports[`ColorPicker should support format 1`] = `
         <path d="M884 256h-75c-5.1 0-9.9 2.5-12.9 6.6L512 654.2 227.9 262.6c-3-4.1-7.8-6.6-12.9-6.6h-75c-6.5 0-10.3 7.4-6.5 12.7l352.6 486.1c12.8 17.6 39 17.6 51.7 0l352.6-486.1c3.9-5.3.1-12.7-6.4-12.7z"></path>
       </svg></i>
   </div>
-  <div class="pcr-app" data-theme="monolith" aria-label="color picker dialog" role="window" style="left: 512px; top: 384px;">
+  <div class="pcr-app visible" data-theme="monolith" aria-label="color picker dialog" role="window" style="left: 512px; top: 384px;">
     <div class="pcr-selection">
       <div class="pcr-color-preview">
         <button type="button" class="pcr-last-color" aria-label="use previous color" style="color: rgb(0, 0, 0);"></button>
@@ -286,7 +286,7 @@ exports[`ColorPicker should support v-model 1`] = `
     <div id="color-picker-box7">
       <div class="pickr">
 
-        <button type="button" class="pcr-button clear" role="button" aria-label="toggle color picker dialog" style="color: rgba(0, 0, 0, 0.15);"></button>
+        <button type="button" class="pcr-button" role="button" aria-label="toggle color picker dialog"></button>
 
 
       </div>
@@ -294,7 +294,7 @@ exports[`ColorPicker should support v-model 1`] = `
         <path d="M884 256h-75c-5.1 0-9.9 2.5-12.9 6.6L512 654.2 227.9 262.6c-3-4.1-7.8-6.6-12.9-6.6h-75c-6.5 0-10.3 7.4-6.5 12.7l352.6 486.1c12.8 17.6 39 17.6 51.7 0l352.6-486.1c3.9-5.3.1-12.7-6.4-12.7z"></path>
       </svg></i>
   </div>
-  <div class="pcr-app" data-theme="monolith" aria-label="color picker dialog" role="window" style="left: 512px; top: 384px;">
+  <div class="pcr-app" data-theme="monolith" aria-label="color picker dialog" role="window">
     <div class="pcr-selection">
       <div class="pcr-color-preview">
         <button type="button" class="pcr-last-color" aria-label="use previous color"></button>
diff --git a/components/grid/__tests__/__snapshots__/demo.test.js.snap b/components/grid/__tests__/__snapshots__/demo.test.js.snap
index f7bbddb2c..b6045d11d 100644
--- a/components/grid/__tests__/__snapshots__/demo.test.js.snap
+++ b/components/grid/__tests__/__snapshots__/demo.test.js.snap
@@ -192,6 +192,32 @@ exports[`renders ./antdv-demo/docs/grid/demo/flex-align.md correctly 1`] = `
 </div>
 `;
 
+exports[`renders ./antdv-demo/docs/grid/demo/flex-fill.md correctly 1`] = `
+<div>
+  <div role="separator" class="ant-divider ant-divider-horizontal ant-divider-with-text-left"><span class="ant-divider-inner-text">
+    Percentage columns
+  </span></div>
+  <div class="ant-row-flex">
+    <div class="ant-col" style="flex: 2 2 auto;">2 / 5</div>
+    <div class="ant-col" style="flex: 3 3 auto;">3 / 5</div>
+  </div>
+  <div role="separator" class="ant-divider ant-divider-horizontal ant-divider-with-text-left"><span class="ant-divider-inner-text">
+    Fill rest
+  </span></div>
+  <div class="ant-row-flex">
+    <div class="ant-col" style="flex: 0 0 100px;">100px</div>
+    <div class="ant-col" style="flex-basis: auto;">auto</div>
+  </div>
+  <div role="separator" class="ant-divider ant-divider-horizontal ant-divider-with-text-left"><span class="ant-divider-inner-text">
+    Raw flex style
+  </span></div>
+  <div class="ant-row-flex">
+    <div class="ant-col" style="flex: 1 1 200px;">1 1 200px</div>
+    <div class="ant-col" style="flex: 0 1 300px;">0 1 300px</div>
+  </div>
+</div>
+`;
+
 exports[`renders ./antdv-demo/docs/grid/demo/flex-order.md correctly 1`] = `
 <div>
   <div class="ant-row-flex">
diff --git a/examples/App.vue b/examples/App.vue
index 535d21598..c661e8747 100644
--- a/examples/App.vue
+++ b/examples/App.vue
@@ -1,119 +1,24 @@
 <template>
-  <a-config-provider :locale="locale">
-    <div>
-      <a-radio-group :value="locale" @change="changeLocale">
-        <a-radio-button key="en" :value="enUS">
-          English
-        </a-radio-button>
-        <a-radio-button key="cn" :value="zhCN">
-          中文
-        </a-radio-button>
-      </a-radio-group>
-      <div><h4>v-model: <input v-model="color" type="text"></h4><a-color-picker v-model="color" style="width:130px" @show="changeHandler" /></div>
-      <div><h4>v-model:{{ color }}</h4><a-color-picker v-model="color" style="width:130px" @show="changeHandler" /></div>
-      <div><h4>备选颜色</h4><a-color-picker :config="config1" /></div>
-      <div><h4>多种输入格式</h4><a-color-picker :config="config2" :get-popup-container="node=>node.parentNode" /></div>
-      <div>
-        <button @click="config2.components.preview = !config2.components.preview">
-          修改config
-        </button>
-      </div>
-      <div><h4>多种尺寸</h4><a-color-picker size="large" /></div>
-      <div><a-color-picker size="small" /></div>
-      <div><h4>切换禁用</h4><a-color-picker :disabled="disabled" /></div>
-      <div>
-        <button @click="disabled = !disabled">
-          切换
-        </button>
-      </div>
-      <div><h4>切换格式 [color:{{ color2 }}]</h4><a-color-picker v-model="color2" :locale="zhCN" :format="format" /></div>
-      <div>
-        <button @click="format = 'HEX'">
-          HEX
-        </button>
-        <button @click="format = 'RGBA'">
-          RGBA
-        </button>
-        <button @click="format = 'HSVA'">
-          HSVA
-        </button>
-        <button @click="format = 'HSLA'">
-          HSLA
-        </button>
-        <button @click="format = 'CMYK'">
-          CMYK
-        </button>
-      </div>
-    </div>
-  </a-config-provider>
+  <div>
+    <a-collapse :accordion="true" default-active-key="2" :bordered="false">
+      <a-collapse-panel key="1" header="This is panel header 1">
+        <p>{{ text }}</p>
+      </a-collapse-panel>
+      <a-collapse-panel key="2" header="This is panel header 2" :disabled="false">
+        <p>{{ text }}</p>
+      </a-collapse-panel>
+      <a-collapse-panel key="3" header="This is panel header 3">
+        <p>{{ text }}</p>
+      </a-collapse-panel>
+    </a-collapse>
+  </div>
 </template>
-
 <script>
-import enUS from 'ant-design-vue/../components/locale/en_US';
-import zhCN from 'ant-design-vue/../components/locale/zh_CN';
 export default {
-  name: 'Demo',
-  data () {
+  data() {
     return {
-      color:'#ccc',
-      color2:'#ccc',
-      disabled:false,
-      format:'',
-      locale: enUS,
-      enUS,
-      zhCN,
-      config1:{
-        swatches: [
-          'rgba(244, 67, 54, 1)',
-          'rgba(233, 30, 99, 0.95)',
-          'rgba(156, 39, 176, 0.9)',
-          'rgba(103, 58, 183, 0.85)',
-          'rgba(63, 81, 181, 0.8)',
-          'rgba(33, 150, 243, 0.75)',
-          'rgba(3, 169, 244, 0.7)',
-          'rgba(0, 188, 212, 0.7)',
-          'rgba(0, 150, 136, 0.75)',
-          'rgba(76, 175, 80, 0.8)',
-          'rgba(139, 195, 74, 0.85)',
-          'rgba(205, 220, 57, 0.9)',
-          'rgba(255, 235, 59, 0.95)',
-          'rgba(255, 193, 7, 1)',
-      ],
-      },
-      config2:{
-        components: {
-          // Main components
-            preview: true,
-            opacity: true,
-            hue: true,
-          interaction: {
-                hex: true,
-                rgba: true,
-                hsla: true,
-                hsva: true,
-                cmyk: true,
-                input: true,
-                clear: true,
-                save: true,
-            },
-            strings: {
-                save: 'Save',
-                clear: 'Clear',
-                cancel: 'Cancel',
-            },
-        },
-      },
+      text: `A dog is a type of domesticated animal. Known for its loyalty and faithfulness, it can be found as a welcome guest in many households across the world.`,
     };
   },
-  methods:{
-    changeHandler(...arg){
-      arg;
-      // console.log(arg);
-    },
-    changeLocale(e) {
-      const localeValue = e.target.value;
-      this.locale = localeValue;
-    },
-  },
 };
 </script>
diff --git a/package.json b/package.json
index 24a7caf07..86b02a0f0 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "ant-design-vue",
-  "version": "1.6.3",
+  "version": "1.6.4",
   "title": "Ant Design Vue",
   "description": "An enterprise-class UI design language and Vue-based implementation",
   "keywords": [