The latest stable version of URE Pro is 4.28.2. It has less problems with WordPress default filtering and sorting that 4.27.1.
I added ‘comment_status’ parameter to the development version. It (4.29.b7) is available for testing. I plan to publish it as a stable one in 1-2 weeks.
Show me a screenshot of the top part of the ‘Posts’ page with ‘filter’ controls. I suppose it differs for the WordPress default one.