This seems to have crept back in. I have a simple view with the latest 6-3 dev similar to the one created in the mustardseed media screencast. For the pager I added a second image field using using a different imagecache preset (smaller) and I don't see any type of active state identifier when I watch the source scroll with firebug.
Attached are the views export, css, and js from the source.
I don't have time to look at this right this minute, but I figured I'd post it in case someone else stumbles across it.