Index: branches/5.3.x/core/units/categories/categories_tag_processor.php
===================================================================
--- branches/5.3.x/core/units/categories/categories_tag_processor.php
+++ branches/5.3.x/core/units/categories/categories_tag_processor.php
@@ -1277,8 +1277,9 @@
 
 		$edit_code_before = $edit_code_after = '';
 		$inline_editing = isset($params['mode']) && $params['mode'] == 'inline';
+		$readonly = isset($params['mode']) && $params['mode'] == 'readonly';
 
-		if ( EDITING_MODE == EDITING_MODE_CONTENT ) {
+		if ( EDITING_MODE == EDITING_MODE_CONTENT && !$readonly ) {
 			if ( $inline_editing ) {
 				$params['name'] = 'content_block_' . $num;