Images with the same filename appear as a single attachment in the Customer Portal

Problem

When customers send a request via email, attaching two images with the same file name, JIRA will not display the images correctly.

Steps to reproduce the problem

1. Send an email to the support email address with two images attached with the same file name.

Expected result

Two different images will be uploaded and displayed.

Actual result

Two images are uploaded, however, they look exactly the same in the Customer Portal. In JIRA all the images appear correctly under Attachments but in the Comments tab, the attachments seem to be the first one added.

Workaround

Upload images only with different file names.