fix <Content> to have looser shouldComponentUpdate

lib/components/content.js

@@ -70,11 +70,9 @@ class Content extends React.Component {
    */
 
   shouldComponentUpdate = (props, state) => {
-    if (props.state.isNative) return false
-    return (
-      props.state.selection != this.props.state.selection ||
-      props.state.document != this.props.state.document
-    )
+    return props.state.isNative
+      ? false
+      : true
   }
 
   /**