User blog comment:Rappy 4187/Technical Update: September 18, 2012/@comment-1474707-20120919160558/@comment-4674838-20120919162115

Yeah, that dropdown menu in RC is still pretty buggy. If I 1) check Select All 2) Uncheck Select All 3) Check (Main) and then 4) Click Go, it resets to All namespaces ...

Also, the namespaces URL parameter still isn't fixed. e.g. http://community.wikia.com/wiki/Special:RecentChanges?namespace=500 should show only blog edits and should ignore whatever settings you've previously picked from the dropdown. It works perfectly fine while logged out.. but logged in the, new dropdown kills it.