Intercom.instance.updateUser() breaks Intercom Messenger

[chrallard]

Platform: Web
Flutter: 3.19.6
intercom_flutter: ^9.0.1

I get the following error whenever I call Intercom.instance.updateUser().

Intercom Messenger error: Missing user_hash. 
A valid user_hash is required to authenticate users when Identity Verification is enabled. 
For more details, see https://docs.intercom.com/configure-intercom-for-your-product-or-site/staying-secure/enable-identity-verification-on-your-web-product.

Now Intercom.instance.displayMessenger() no longer opens.
I am successfully setting the user hash via Intercom.instance.setUserHash() before attempting to update the user.

Reproducible example:
I've removed any sensitive data.

void main() {
  runApp(const MyApp());
  Intercom.instance.initialize(
    'insert_key_here',
  );
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: const Text('Intercom Example')),
        body: Center(
          child: Row(
            children: [
              ElevatedButton(
                onPressed: () {
                  Intercom.instance.setUserHash(
                    'insert_hash_here',
                  );
                },
                child: const Text('Hash'),
              ),
              ElevatedButton(
                onPressed: () {
                  Intercom.instance.loginIdentifiedUser(
                    userId: 'insert_user_id',
                  );
                },
                child: const Text('Log in'),
              ),
              ElevatedButton(
                onPressed: () {
                  Intercom.instance.updateUser(
                    email: '_',
                    name: '_',
                    phone: '_',
                    userId: '_',
                    company: '_',
                    companyId: '_',
                  );
                },
                child: const Text('Update user'),
              ),
              ElevatedButton(
                onPressed: () {
                  Intercom.instance.logout();
                },
                child: const Text('Log out'),
              ),
              ElevatedButton(
                onPressed: () {
                  Intercom.instance.displayMessenger();
                },
                child: const Text('Open Intercom Messenger'),
              ),
            ],
          ),
        ),
      ),
    );
  }
}