Hello,I've the impression that QLPreviewController is leaking on iOS 10 (release version).I've compiled the Apple DocInteraction sample, which push a QLPreviewController on a UINavigationController : QLPreviewController *previewController = [[QLPreviewController alloc] init]; previewController.dataSource = self; previewController.delegate = self; [[self navigationController] pushViewController:previewController animated:YES];When I pop the previewController, I can see with the new Xcode 8 object browser that there is still a leaving instance of a QLPreviewController.If I subclass QLPreviewController:@interface MYViewController : QLPreviewController @end @implementation MYViewController - (void)dealloc { } @enddealloc method is never called when the view controller is popped. With the same code on a iOS 8.1 simulator, dealloc is always called.Can somebody confirms my investigation, or has any idea how to patch this leak ?Thanks, Jice