[bugfix] Tab: animated overflow

packages/tabs/index.js

@@ -442,7 +442,7 @@ export default sfc({
             {this.slots('nav-right')}
           </div>
         </div>
-        <div ref="content" class={bem('content')}>
+        <div ref="content" class={bem('content', { animated })}>
           {animated ? (
             <div class={bem('track')} style={this.trackStyle}>
               {this.slots()}

packages/tabs/index.less

@@ -125,6 +125,12 @@
     will-change: left;
   }
 
+  &__content {
+    &--animated {
+      overflow: hidden;
+    }
+  }
+
   &--line {
     padding-top: @tabs-line-height;