Issue #3268897: Draggable Views breaks first column output if field contains a <drupal-placeholder> like a flag link

draggableviews.module

@@ -107,14 +107,14 @@ function draggableviews_preprocess_views_view_table(&$variables) {
         break;
       }
     }
+
     if (!empty($first_column)) {
       // Indent the first column that is not the draggableviews field.
-      $columns_title = $row['columns'][$first_column]['content'][0]['field_output']['#markup'] ?? '';
-      $indent = [
+      $variables['rows'][$key]['columns'][$first_column]['content'][0]['draggableviews_indent'] = [
         '#theme' => 'indentation',
         '#size' => $draggableviews->getDepth($key),
+        '#weight' => -100,
       ];
-      $variables['rows'][$key]['columns'][$first_column]['content'][0]['field_output']['#markup'] = (string) (\Drupal::service('renderer')->render($indent) . $columns_title);
     }
   }