+    private function sanitizeValue($value)
+    {
+        return is_bool($value) ? $value : str_replace(['{', '}'], '', (string) $value);
+    }

+        $pattern = '/{{.*?}}/';
+        do {
+            $result = preg_replace($pattern, '', (string)$result);
+        } while (preg_match($pattern, $result));

    public function getTemplateFilter()
    {
        if (empty($this->templateFilter)) {
            $this->templateFilter = $this->getFilterFactory()->create();
            $this->templateFilter->setUseAbsoluteLinks($this->getUseAbsoluteLinks())
                ->setStoreId($this->getDesignConfig()->getStore())
                ->setUrlModel($this->urlModel);
        }
        return $this->templateFilter;
    }

    public function addAfterFilterCallback(callable $afterFilterCallback)
    {
        // Only add callback if it doesn't already exist
        if (in_array($afterFilterCallback, $this->afterFilterCallbacks)) {
            return $this;
        }

        $this->afterFilterCallbacks[] = $afterFilterCallback;
        return $this;
    }