Log in as admin
Admin Posts > Post AO3 News
Create a news post with an & in the title
Go to the admin post
Leave a comment on the post
Follow the "Thread" link to see the comment show page
The top of the page says "Comment on &"
The top of the page should say "Comment on &"
Doesn't happen with comments on works or tags.
It might be work overriding the title method on admin posts so it's always html_safe, like we did with work titles.