After iPadOS 26 Beta and iOS 26 Beta, AVCaptureMetadataOutput no longer detects Face on some devices.

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Created Jul ’25

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I'm creating an app that uses AVCaptureSession to pass camera input to AVCaptureMetadataOutput type set [metaout setMetadataObjectTypes:@[AVMetadataObjectTypeFace]] and scan Face.

After updating to OS 26 Beta2 and iOS 26 Beta2, an issue has occurred where the delegate method of AVCaptureMetadataOutputObjectsDelegate is not called on some devices.

The following devices are experiencing this issue.

iPad (9th Gen)
iPad air (4th Gen)
iPhone 15

This issue has not occur on any other devices I have. I tried running the AVFoundation sample code on the Apple Developer site on the above device. The same problem still occurs. [https://developer.apple.com/documentation/avfoundation/capture_setup/avcambarcode_detecting_barcodes_and_faces] Are any additional settings required after OS 26 beta and iOS 26 beta? Or is there some problem on the OS side?

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evgx OP

2w

Hello @wangxinweiios on iOS 26 stable version release yesterday , this bug still happen, the following method is never invoked:

func metadataOutput(_ captureOutput: AVCaptureMetadataOutput, didOutput metadataObjects: [AVMetadataObject], from connection: AVCaptureConnection)

I also reproduce this bug in iPhone 11 , iPhone 13 Pro Max and iPhone 16 Pro Max

On iPhone 16 Pro this method works properly.

Apple said something about this bug ?

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