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Area:
Something not on this list

Summary:
About half the time, the following ReplayKit API

[self.extensionContext loadBroadcastingApplicationInfoWithCompletion:^(NSString *_Nonnull bundleID, NSString *_Nonnull displayName, UIImage *_Nullable appIcon) {}];

Switches the ordering of the parameters to the completion block. When this happens a UIImage is passed into displayName, or bundleID, potentially causing a crash if this case isn't checked.

Steps to Reproduce:
1. Create a ReplayKit UI extension
2. Implement the above API
3. Add logging to above completion block that logs bundleID, displayName, and appIcon
4. Create a handful of broadcasts
5. Verify that the completion block parameters are out of order

Expected Results:
bundleID should be an NSString
displayName should be an NSString
appIcon should be a UIImage

Actual Results:
bundleID is sometimes a UIImage
displayName is sometimes a UIImage
appIcon is sometimes an NSString

Version:
iOS 10.1.1

Notes:
Seems to happen roughly half the time. We've added very defensive code that checks the types and tries to detect a bundle ID in a string as a workaround.

Configuration:
iPad Mini 4

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