Pass whole binding instead of just the new value

packages/block-editor/src/hooks/use-bindings-attributes.js

@@ -166,7 +166,7 @@ export const withBlockBindingSupport = createHigherOrderComponent(
 					}
 
 					const keptAttributes = { ...nextAttributes };
-					const updatesBySource = new Map();
+					const bindingsBySource = new Map();
 
 					// Loop only over the updated attributes to avoid modifying the bound ones that haven't changed.
 					for ( const [ attributeName, newValue ] of Object.entries(
@@ -187,37 +187,39 @@ export const withBlockBindingSupport = createHigherOrderComponent(
 						) {
 							continue;
 						}
-						updatesBySource.set( source, {
-							...updatesBySource.get( source ),
-							[ attributeName ]: newValue,
+						bindingsBySource.set( source, {
+							...bindingsBySource.get( source ),
+							[ attributeName ]: {
+								args: binding.args,
+								newValue,
+							},
 						} );
 						delete keptAttributes[ attributeName ];
 					}
 
-					if ( updatesBySource.size ) {
+					if ( bindingsBySource.size ) {
 						for ( const [
 							source,
-							attributes,
-						] of updatesBySource ) {
+							sourceBindings,
+						] of bindingsBySource ) {
 							if ( source.setValuesInBatch ) {
 								source.setValuesInBatch( {
 									registry,
 									context,
 									clientId,
-									attributes,
+									sourceBindings,
 								} );
 							} else {
 								for ( const [
 									attributeName,
-									value,
-								] of Object.entries( attributes ) ) {
-									const binding = bindings[ attributeName ];
+									{ args, newValue: value },
+								] of Object.entries( sourceBindings ) ) {
 									source.setValue( {
 										registry,
 										context,
 										clientId,
 										attributeName,
-										args: binding.args,
+										args,
 										value,
 									} );
 								}

packages/editor/src/bindings/pattern-overrides.js

@@ -30,7 +30,7 @@ export default {
 
 		return overridableValue === '' ? undefined : overridableValue;
 	},
-	setValuesInBatch( { registry, clientId, attributes } ) {
+	setValuesInBatch( { registry, clientId, sourceBindings } ) {
 		const { getBlockAttributes, getBlockParentsByBlockName, getBlocks } =
 			registry.select( blockEditorStore );
 		const currentBlockAttributes = getBlockAttributes( clientId );
@@ -45,6 +45,15 @@ export default {
 			true
 		);
 
+		// Extract the updated attributes from the source bindings.
+		const attributes = Object.entries( sourceBindings ).reduce(
+			( attrs, [ key, { newValue } ] ) => {
+				attrs[ key ] = newValue;
+				return attrs;
+			},
+			{}
+		);
+
 		// If there is no pattern client ID, sync blocks with the same name and same attributes.
 		if ( ! patternClientId ) {
 			const syncBlocksWithSameName = ( blocks ) => {