bug(ios): Camera crash on iOS 16 / 17 — works only after updating to iOS 18

[bohdanovdmytro]

When opening the barcode scanner (camera), the app crashes immediately on devices running iOS 16 and iOS 17.
The same devices work fine after updating to iOS 18.

Affected devices

Device	iOS Version	Result
iPhone 8 Pro Max	16.7.14	Crash
iPhone SE (Gen 2/3)	17.5.1	Crash
iPhone 13	17.2.1	Crash

All devices work correctly after updating to the latest iOS 18.

Possible cause

After reviewing the OSBarcodeLib-iOS source code, I noticed the library uses several APIs that were deprecated in iOS 17:

• AVCaptureVideoOrientation and videoPreviewLayer.connection?.videoOrientation — deprecated in iOS 17.0 in favor of AVCaptureDevice.RotationCoordinator
• UIWindowScene.windows (in UIApplication+Window.swift) — deprecated in iOS 15.0 in favor of UIWindowScene.keyWindow
• onChange(of:perform:) — deprecated in iOS 17.0

These deprecated APIs may behave unpredictably on iOS 16–17, while iOS 18 likely improved backward compatibility.

Environment

• @capacitor/barcode-scanner: 3.0.2
• OSBarcodeLib: 2.0.1 (pinned in podspec)
• @capacitor/ios: 8.1.0
• @capacitor/core: 8.1.0
• Minimum deployment target: iOS 15.0