In Google Reader, keyboard shortcuts n and p move the selected item to the next or the previous without opening it. These commands don't work with r24749 (the active item frame just kind of jitters).
I have not been able to reproduce this.
Moving all JavaScriptGlue bugs to JavaScriptCore. The JavaScriptGlue framework itself is long gone. And most of the more recent bugs put in this component were put there by people who thought this was for some other aspect of “JavaScript glue” and have nothing to do with the actual original reason for the existence of this component, which was an OS-X-only framework named JavaScriptGlue.