Crash on boot with symbol not found using Xcode 26

[MacTHEgenius]

Describe the bug

While running a project in Xcode 26 (beta 3, 17A5276g), I have encountered a crash while the app is booting. The project supports iOS 16 and up and I tried to run on iOS 17 and 18. iOS 26 does not have the issue. Beta 4 (17A5276g) also has the issue.

The console shows:

dyld[69490]: Symbol not found: _NSUserActivityTypeBrowsingWeb
  Referenced from: <F73BE6AC-8745-3A0F-B915-9F2B68E57FD6> /Users/<user>/Library/Developer/CoreSimulator/Devices/8C47BC92-E2CE-4073-896D-9396AE3C7813/data/Containers/Bundle/Application/9693B6A3-2620-4DEA-A841-2A5DB746E59D/Test Branch IO.app/Frameworks/BranchSDK.framework/BranchSDK
  Expected in:     <249A90D0-C066-3C75-BA2D-91CF970662A0> /Library/Developer/CoreSimulator/Volumes/iOS_22F77/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 18.5.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/CoreServices.framework/CoreServices

The app runs fine using Xcode 16.4 on iOS 18.5.

I have minimal project reproducing the issue.

Test Branch IO.zip

Steps to reproduce

1. Add BranchSDK dependency using Swift Package Manager or CocoaPods
2. Import BranchSDK (optional)
3. Run in Xcode 26

Expected behavior

The app should not crash on boot and should resolve NSUserActivityTypeBrowsingWeb properly.

SDK Version

3.12.1

XCode Version

26 beta 3

Device

iPhone 16 Pro (simulator) and iPhone 16 (device)

OS

18.5

Additional Information/Context

No response

[NidhiDixit09]

@MacTHEgenius Are you seeing this issue on Real Devices also?

[MacTHEgenius]

@MacTHEgenius Are you seeing this issue on Real Devices also?

Yes, on simulators and devices (as described in the issue).

[dennis-li-skyscanner]

Hi @NidhiDixit09, I am facing the same NSUserActivityTypeBrowsingWeb crash and created a fork to fixed it. (the fork & the 1 line change commit)
How should i contribute this back to the this repo?

I basically applied the same fix from firebase's sdk
https://github.com/firebase/firebase-ios-sdk/pull/15165/files#diff-bf5299dfd76de3dda5e6125783fc9e442a792c550ef8230ab02db0717115afd9R178

[MacTHEgenius]

After taking some time to investigate this issue, it seems to be from the linked CoreServices.framework in the podspec or Package.swift.

Removing it fixes the issue and the app no longer crash on boot.

I cloned this repo locally, made the changes, reference the local podspec in my project, and it works as expected.

[clintob]

Bumping this thread (though I know it's only been a week or two). The simple act of adding the SDK to the project (via SPM) causes this crash at launch – without even adding any code to the project. And as it's a launch crash, this is a critical issue for iOS 26 development, which we need to continue given its upcoming release, despite being a beta. Can we get an update and timeline for resolution?

[NidhiDixit09]

Thanks everyone for your input and for digging into this issue.

Since this is an X-Code issue, we have reported it to Apple (FB19360188) and we are waiting for update from Apple as well as next X-Code Release.
@dennis-li-skyscanner @MacTHEgenius Thanks for the fixes. We will test them.
But since its a Beta Release, we are avoiding workarounds for now and waiting for a fix from Apple.

[bbijoch]

You don't need a fix from apple. Do the same as Firebase/InAppMessaging did. They have the same problem:
firebase/firebase-ios-sdk#15164

[clintob]

You don't need a fix from apple. Do the same as Firebase/InAppMessaging did. They have the same problem: firebase/firebase-ios-sdk#15164

+1 to that. It's a trivial fix that's been safely implemented by Google.

[clintob]

Spoke too soon – XCode Beta 6 (dropped this morning) resolves the issue. 👍

[MacTHEgenius]

Confirming this is fixed with the newest Xcode 26 Beta (17A5305f). Thanks @clintob for pointing that out!

[NidhiDixit09]

Thanks for the update @clintob. @MacTHEgenius Can we close this ticket now ?

[MacTHEgenius]

Thanks for the update @clintob. @MacTHEgenius Can we close this ticket now ?

Sure!