onMobileRTCAuthReturn never gets called on a valid JWT token

Meeting SDK iOS
1

Description
I’m trying to integrate the iOS Meeting SDK, but I can’t authenticate the SDK with a JWT token.
The tokens are generated from our backend (as recommended) and I confirm they are valid.
They did work with MobileRTCSample and also my integration of Android Meeting SDK.

When I pass a valid JWT token and call authService.sdkAuth(), onMobileRTCAuthReturn from the delegate never gets called.
The weird thing is when I pass a expired JWT token, onMobileRTCAuthReturn is actually called and give this error MobileRTCAuthError_TokenWrong which is correct.
I don’t understand what I am missing here, I don’t see any major difference between the sample project and mine.

Thanks in advance for your help!

Which iOS Meeting SDK version?
5.15.12

To Reproduce(If applicable)
Steps to reproduce the behavior:

  1. Call authService.sdkAuth() with a valid JWT token
  2. onMobileRTCAuthReturn don’t get called

Code

class ZoomSDK: NSObject {
    private let instance = MobileRTC.shared()
    private var continuation: CheckedContinuation<MobileRTCAuthError, Never>?
    
    func authenticate(domain: String, jwtToken: String) async -> Bool {
        let context = MobileRTCSDKInitContext()
        context.domain = "zoom.us"
        context.enableLog = true
        context.locale = .default
        guard instance.initialize(context) else {
            Log.shared.e(message: "Could not initialize MobileRTC")
            return false
        }
        guard let authService = instance.getAuthService() else { return false }
        authService.delegate = self
        authService.jwtToken = jwtToken

        let value: MobileRTCAuthError = await withCheckedContinuation { continuation in
            self.continuation = continuation
            authService.sdkAuth()
        }
        return value == MobileRTCAuthError.success
    }    
}

extension ZoomSDK: MobileRTCAuthDelegate {
        
    func onMobileRTCAuthReturn(_ returnValue: MobileRTCAuthError) {
        print("onMobileRTCAuthReturn() - return: \(returnValue)")
        self.continuation?.resume(returning: returnValue)
    }   
}
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