Receipt approval attachments not appear

Summary:

After set approval rules for self service receipt approvals, attachment not appear in the email which user upload in his receipt.

** Send task attachments with email notifications (is enabled)
** Size is set to 10 in application prefrences.

Content (please ensure you mask any confidential information):

Version (include the version you are using, if applicable):

26B

Code Snippet (add any code snippets that support your topic, if applicable):