disable rich text if attribute not part of bindings

packages/block-editor/src/components/rich-text/index.js

@@ -146,13 +146,27 @@ export function RichTextWrapper(
 			isSelected = selectionStart.clientId === clientId;
 		}
 
-		// Disable Rich Text editing if block bindings specify that.
+		// Disable Rich Text editing if block bindings specify that, or if there are block bindings
+		// but rich text attribute is not included in the bindings.
 		let shouldDisableEditing = false;
 		if ( blockBindings && blockName in BLOCK_BINDINGS_ALLOWED_BLOCKS ) {
 			const blockTypeAttributes = getBlockType( blockName ).attributes;
+
+			for ( const [ attributeName, attributeValue ] of Object.entries(
+				blockTypeAttributes
+			) ) {
+				if (
+					attributeValue.source === 'rich-text' &&
+					! Object.keys( blockBindings ).includes( attributeName )
+				) {
+					shouldDisableEditing = true;
+				}
+			}
+
 			const { getBlockBindingsSource } = unlock(
 				select( blockEditorStore )
 			);
+
 			for ( const [ attribute, args ] of Object.entries(
 				blockBindings
 			) ) {