After composing a post, the original "Compose" button changes to "Reply", and it sticks no matter where I navigate, when it should return to "Compose" after navigating away from a specific thread.
Also, consider closing out the Compose dialog after a successful post.
Ah, exact flow:
Post a message > Click the "Show" link on the success dialog > The specific post is shown, the button at the top right changes to "Reply". > Click away in the navigation to anything (Activities, Posts, Discussions, etc.) and the button stays at "Reply".