What steps will reproduce the problem?
1. In a diff, comment on a line, then publish.
2. Go back to the diff, click the comment you just published, and add another comment using
the "your comment" box (as opposed to replying to the existing comment.)
3. Publish.
What is the expected output? What do you see instead?
The second comment "thread" is not shown in the diff. Only the first comment plus replies
to that comment. There should be a way to see all comment threads for a specific line.
We just updated yesterday, so this is after the UI rewrite.