Скачать или смотреть Game Center broken in iOS 9

UPDATE: Here, from April 13, is my video of Game Center running in iOS 9.3.2b1:    • Game Center fix in iOS 9.3.2 beta 1  

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Having written about Game Center on my blog, Revert to Saved —

http://reverttosaved.com/2016/03/16/g...
http://reverttosaved.com/2016/03/18/b...

— I've had people still ask what's wrong with the system. The video shows an iPad Air 2 that was never restored from back-up. So this is a new device from Apple that's been used for a few months. As you can see, the following happens:

Game Center white-screens on launch
Settings freezes when the Game Center section is accessed
Games that attempt to link to Game Center cannot do so successfully

The game here, Dashy Crashy, is fortunate, in that GC's failure only affects minor aspects of the game (seeing Game Center friends as you overtake their best scores, logging scores and achievements). Some fail to launch entirely, while others are rendered unusable because some turn-by-turn systems are entirely reliant on Game Center.

This issue was first known about in summer 2015, in the iOS 9 betas. iOS 9.3, released on March 21, does not fix this critical bug.