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Summary:
When an UIDocumentInteractionController is presented as “open-in”, and the iPad gets rotated, the UIDocumentInteractionController will be dismissed but its documentInteractionControllerDidDismissOpenInMenu-delegate-method is not being called.
The biggest impact of this may be related to custom “Open-in”-UIActivity-implementations in various apps. The UIActivity-implementations rely on the behaviour that any of the delegate-methods are being called, to call “activityDidFinish:” at the correct point of time. As none of the delegates are being called when the device gets rotated, “activityDidFinish:” is never being called and the UIActivityController and all its UIActivities will never be removed from memory, thus, they leak.

Steps to Reproduce:
1. Open the attached project
2. Tap the button
3. Rotate the device

Expected Results:
As the UIDocumentInteractionController is being dismissed, it calls documentInteractionControllerDidDismissOpenInMenu on its delegate.

Actual Results:
UIDocumentInteractionController is being dismissed, but it doesn’t call its delegate-method documentInteractionControllerDidDismissOpenInMenu.

Version:
iOS 10b3

Notes:


Configuration:
iPad Simulator / iPad 4

Attachments:
'UIDocumentInteractionControllerRotationBug.zip' was successfully uploaded.