GWT editor 'translation-comment' filter is just confusing

1. Go to any document in the editor
2. Press the history button on a target translation
3. Enter a comment in the box and press 'Add comment'
4. Click the search filter and select translation-comment from the list
5. Enter the text of the comment into the search filter
6. Press Enter

Actual:
(No Content)

Expected:
The textflow that was commented on should be visible