Razer Kishi for iPhone doesn't get recognized.

My Razer Kishi controller, which previously worked extremely well with Minecraft, is no longer being recognized. No other application on the device is affected by this, and the touch controls are also working correctly.

 

UPDATE: It appears that this is only a problem if the device was already connected when Minecraft is opened. If Minecraft is opened to the title screen and then the device is connected, it works fine.