[BUG] Group Call Meeting chat is sending messages to bot

Describe the issue
We have initiated a group call for 2 users using cloud communications api. Both the users have joined the call, and when we click on show conversations that is giving a chat and a user can only chat with the bot.

When we invite a user from teams, then we were able to get the meeting chat as expected.

Call Initiated using cloud communications api (v1.0)
Request payload we are using

{
    "@odata.type": "#microsoft.graph.call",
    "direction": "outgoing",
    "subject": "Create a group call with service hosted media",
    "callbackUri": "https://myserver.com/api/snc/microsoft_graph_api/evet",
    "source": {
        "@odata.type": "#microsoft.graph.participantInfo",
        "identity": {
            "@odata.type": "#microsoft.graph.identitySet",
            "application": {
                "@odata.type": "#microsoft.graph.identity",
                "displayName": "Comm Call Bot",
                "id": "37a1f7fb-7476-46de-accb-36516f762fd1"
            }
        }
    },
    "targets": [
        {
            "@odata.type": "#microsoft.graph.invitationParticipantInfo",
            "identity": {
                "@odata.type": "#microsoft.graph.identitySet",
                "user": {
                    "@odata.type": "#microsoft.graph.identity",
                    "displayName": "XXXXXXXXXXXXXXX",
                    "id": "a8ae286f-6c1c-470e-b453-bb3a5aa87018"
                }
            }
        },
        {
            "@odata.type": "#microsoft.graph.invitationParticipantInfo",
            "identity": {
                "@odata.type": "#microsoft.graph.identitySet",
                "user": {
                    "@odata.type": "#microsoft.graph.identity",
                    "displayName": "XXXXXXXXXXXXXXX",
                    "id": "43baba33-9071-44ce-b3ea-c18eb05ca038"
                }
            }
        }
    ],
    "requestedModalities": [
        "audio",
        "video"
    ],
    "mediaConfig": {
        "@odata.type": "#microsoft.graph.serviceHostedMediaConfig",
        "removeFromDefaultAudioGroup": "false"
    },
    "tenantId": "a46df9b7-2c9b-49d5-8c9f-d1b3de4ba59f"
}

Expected behavior
We should be able to have a group chat with the user who are in the call without inviting new user to teams.

Graph SDK:

• Version [v1.0/beta]

Call ID
4d1f0000-0820-4079-8d9e-126d40117453
dd1f0100-2220-438b-a5a4-07a01a47397d

ScreenShots

After inviting a new user from teams, we were able to get the meeting chat work as expected.

Start by reviewing the Microsoft Graph cloud communications API group-call request and the two call IDs provided. Compare the call created directly with the call after inviting a Teams user, using the screenshots and expected behavior as references. Done means determining whether the meeting chat can target the existing call participants without inviting another user, and documenting the confirmed behavior or required change.