Rich Text: Determine emptiness by value

blocks/rich-text/index.js

@@ -145,8 +145,6 @@ export class RichText extends Component {
 			formats: {},
 			selectedNodeId: 0,
 		};
-
-		this.isEmpty = ! value || ! value.length;
 	}
 
 	/**
@@ -397,8 +395,7 @@ export class RichText extends Component {
 	 */
 
 	onChange() {
-		this.isEmpty = this.editor.dom.isEmpty( this.editor.getBody() );
-		this.savedContent = this.isEmpty ? [] : this.getContent();
+		this.savedContent = this.getContent();
 		this.props.onChange( this.savedContent );
 	}
 
@@ -820,12 +817,13 @@ export class RichText extends Component {
 		} = this.props;
 
 		const ariaProps = pickAriaProps( this.props );
+		const isEmpty = ! value || ! value.length;
 
 		// Generating a key that includes `tagName` ensures that if the tag
 		// changes, we unmount and destroy the previous TinyMCE element, then
 		// mount and initialize a new child element in its place.
 		const key = [ 'editor', Tagname ].join();
-		const isPlaceholderVisible = placeholder && ( ! isSelected || keepPlaceholderOnFocus ) && this.isEmpty;
+		const isPlaceholderVisible = placeholder && ( ! isSelected || keepPlaceholderOnFocus ) && isEmpty;
 		const classes = classnames( wrapperClassName, 'blocks-rich-text' );
 
 		const formatToolbar = (