[@robkk Moderator 11 years ago]

It is missing on the frontend of your site on the topic and reply forms right??

Did you make sure you have the Post Formatting enabled in Settings > Forums?

You can also see if it is a plugin issue by trying some troubleshooting. You can also see if you have some code snippet in your theme by switching to a default theme temporarily to see if it fixes the issue.

Troubleshooting