Last modified: 2012-06-14 23:59:11 UTC
I'm not sure if r112586 is responsible or not, but to aid in backwards-compatibility the old Special:CheckUser/Log should redirect to the new Special:CheckUserLog and not (as it currently is) to Special:CheckUser.
This code: ( !isset( $this->logSubpageTitle ) ) { $this->logTitle = didn't have a chance to work at all (logSubpageTitle was never set so this was always true). I think Special:CheckUser/Log got broken before, when implementing Special:CheckUserLog - looks like it was r100506 breaking this compatibility. Right now, after bug 31793, [[Special:CheckUser/Log]] means something else: redirect to the Special:CheckUser form with username prefilled with username 'Log'", so I would propose to WONTFIX this.