is_admin doesn't reflect members' type


I’m trying to understand why workspace membership endpoint is returning is_admin = False for a user who is an Admin in the organization.

Here is the API response:

  "data": {
    "gid": "1203231768670529",
    "user": {
      "gid": "1203231768666896",
      "name": "User2 Lumos",
      "resource_type": "user"
    "resource_type": "workspace_membership",
    "user_task_list": {
      "gid": "1203231768673883",
      "resource_type": "user_task_list",
      "name": "My Tasks in"
    "workspace": {
      "gid": "1203231852382558",
      "name": "",
      "resource_type": "workspace"
    "is_active": true,
    "is_admin": false,
    "is_guest": false,
    "vacation_dates": null,
    "created_at": "2022-10-24T22:52:26.150Z"

And my Admin dashboard:

The field description is pretty generic Reflects if this user is an admin of the workspace., but I believe being an admin or a super admin should make this field true, as said here.

Why is_admin is false in this scenario? Shouldn’t it be true?

@sasha_f @John_Vu ?