[WPMU DEV Support] @ references not processed in these Feature Requests

Post a Feature Request here that includes an @ reference to another user. When posted, the @ reference is not processed into a link to the user profile. Edit and re-submit the post and the @ reference is processed.

This dove-tails with other requests to improve the entry of feature requests, where we don't have the same UI as for other posts here to add formatting, images, links, etc.