Mentioning somebody in snippet's description does not render the link to the user

Summary

If I am making a public snippet and I mention somebody using @name syntax, once rendered, it does not show as a mention.

Steps to reproduce

• Start creating a public snippet.
• Mention @user in snippet's description.
• Click preview, observe that mention is rendered.
• Save the snippet, observe that mention is not rendered.

Example Project

https://gitlab.com/snippets/1882832

What is the current bug behavior?

Mention is not rendered once saved, but it is rendered in preview.

What is the expected correct behavior?

Or:

• That mention is not rendered both in preview and both when saved.
• That mention is rendered both in preview and when saved (preferred).