Flex grid not working on iOS 8

Created by: IonicaBizau

Pretty much like #22223 (closed)

• Operating system and version: iOS
• Browser and version: iOS 8, Safari
• JSBIN: http://output.jsbin.com/xabirulimi

Expected (Google Chrome emulator)

Current

And this is the Bootstrap website:

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Documentation mentions you support the latest stable versions of major browsers––I'm not sure if Safari on iOS 8 is included among these.