WebPubSub client can't join a group but can join other groups of the same access_token

Question

We successfully create access_token for PubSub which includes webpubsub.joinLeaveGroup and webpubsub.sendToGroup for 4 groups (like A, B, C and D, so 8 roles in total) but the client (which is MAUI app) can't join the group D and receives "Received non-success acknowledge from the service: The client does not have permission to join group 'D'."!

I can confirm that once access_token is generated, we re-initialize the WebPubSubClient with the new token (which is successful) and then:

• We are able to send message to group A
• We are able to join group C

But we can't join group D!

Below is a last section of Python API code that generates the access_token. 'groups' variable is sent like 'A|B|C|D':

		....
		all_roles = []
        for group_name in groups.split('|'):
            all_roles.append("webpubsub.joinLeaveGroup." + group_name)
            all_roles.append("webpubsub.sendToGroup." + group_name)
        wsClient = WebPubSubServiceClient.from_connection_string(connectionstring, hub)
        token_key = wsClient.get_client_access_token(roles=all_roles, minutes_to_expire=1440)
        return str(token_key['url'])

In MAUI, our initialize and join group methods are:

public async Task InitializeConnection(string pubSubUrl)

{

try

{

    _client = new WebPubSubClient(new Uri(pubSubUrl));

    _client.GroupMessageReceived += HandleMessage;

    await _client.StartAsync();

    _isConnected = true;

}

catch (Exception ex)

{

    _isConnected = false;

    throw new Exception($"Failed to initialize WebSocket connection: {ex.Message}");

}

}

public async Task JoinGroup(string groupName)

{

if (!_isConnected)

    throw new InvalidOperationException("WebSocket is not connected");

try

{

    await _client.JoinGroupAsync(groupName);

}

catch (Exception ex)

{

    throw new Exception($"Failed to join group {groupName}: {ex.Message}");

}

}