Onebox tweets are much less awesome on our forum than this one.
Specifically, links to a reply will show the original tweet instead, and also lack profile pictures.
We’re up to date on v1.4.0.beta8 +35.
This is how it appears here:
This is a test post in a hidden section of our forum: Onebox shows original tweet instead of linked reply tweet
Contact me if you would like access to view it.