Inviter.name property missing from "invite-user" email template

Hello, we’re trying to customize our organization invitation template (using a custom email provider). According to the documentation we should be able to reference an inviter.name property, but it’s missing from the template. I added the {%debug%} into the template, but the property is absent.

Fortunately, I’m able to see the user_metadata object when sending the following body on the create invitation API request. (to use this as a fallback value since the correct property is missing) But I’m not sure why the expected inviter.name doesn’t show

  "inviter": {
    "name": "Example Name"
  },
  "invitee": {
    "email": "example@example.com"
  },
  "send_invitation_email": true,
  "client_id": "<client_id>",
  "user_metadata": {
    "inviterName": "backup name since inviter.name is missing"
  }