If Collaborative Review is configured to allow updating the content and the user clicks the Edit button, they are often editing the content in response to a comment made. But they cannot refer to those comments within the actual web editor when making the actual edits. There also does not appear to be the ability to open the editor in a new tab or window.
A comments panel similar to the change tracking panel in web editor would be most helpful. It should be able to be turned on/off in a similar fashion, and allow comments to be accepted/marked complete or rejected as edits are made.