- // disabled, #cache is enabled, there is a cache hit or miss.
- $prefix = isset($elements['#prefix']) ? $this->xssFilterAdminIfUnsafe($elements['#prefix']) : '';
- $suffix = isset($elements['#suffix']) ? $this->xssFilterAdminIfUnsafe($elements['#suffix']) : '';
-
- $elements['#markup'] = Markup::create($prefix . $elements['#children'] . $suffix);
+ // disabled, #cache is enabled, there is a cache hit or miss. If
+ // #render_children is set the #prefix and #suffix will have already been
+ // added.
+ if (isset($elements['#render_children'])) {
+ $elements['#markup'] = Markup::create($elements['#children']);
+ }
+ else {
+ $prefix = isset($elements['#prefix']) ? $this->xssFilterAdminIfUnsafe($elements['#prefix']) : '';
+ $suffix = isset($elements['#suffix']) ? $this->xssFilterAdminIfUnsafe($elements['#suffix']) : '';
+ $elements['#markup'] = Markup::create($prefix . $elements['#children'] . $suffix);
+ }