Image not rendered if added to description

Steps to Reproduce:

1. Create a new Service Desk.
2. Configure a request type to allow attachment.
3. Create an issue from customer portal and attach an image.
4. Use the wiki renderer to notation for attaching an image to add the image

   !myImage.jpg!

Expected Result
Service Desk would show the attached image and render the image in the description once done.

Actual Result
Image is attached and can be seen in attachment however the image is not rendered in both JIRA and customer portal showing up simply as

!myImage.jpg!