Changing Tags Post Forum Topic Submission

I don't know if this is a core Buddypress issue or not. If so, please just let me know.

I've noticed that when in the Forums and selecting a New Topic, one list tags associated with that topic up front. However, after the Topic has been started, when I go back to edit the topic, there is no option available to modify the tags. Is this just a limitation of Buddypress or is this a theme based issue?

In either case, is there a way to go and modify tags for forum topics post submission?

Dave