They should be wrapped. We may have to add some &zwsp; to make it work as expected.
Created attachment 259394 [details]
I don't think wrapping is right. The rows should be a constant height. I think the tooltip should show the whole thing, but we should truncate the selector with an ellipsis.
Created attachment 259422 [details]
Comment on attachment 259422 [details]
Clearing flags on attachment: 259422
Committed r188667: <http://trac.webkit.org/changeset/188667>
All reviewed patches have been landed. Closing bug.