You can still zhonya during Yasuo ult

I thought this bug was fixed but it is back. as you can see here http://www.twitch.tv/shiphtur/v/6980771?t=4h06m50s

It was supposed to be fixed long time ago

"This is a bug that can sometimes occur when one CC replaces another. It should hopefully be fixed for Yasuo's R specifically next patch and all champions by the patch after." - CertainlyT 2013 http://forums.na.leagueoflegends.com/board/showthread.php?t=4140799

"Fixed a long-standing bug where champions with overlapping crowd control effects could occasionally use abilities (Flash, Zhonya's Hourglass, etc) when transitioning between disables. This will be turned on at a later date in the patch." in Patch 5.1 http://euw.leagueoflegends.com/en/news/game-updates/patch/patch-51-notes

"Fixed a long-standing bug where champions affected by overlapping crowd control effects could occasionally use abilities (Flash, Zhonya’s Hourglass, etc) when transitioning between disables. This will be turned on at a later date in the patch." in Patch 5.2 http://euw.leagueoflegends.com/en/news/game-updates/patch/patch-52-notes

Has this fix actually been enabled?