many_to_many with non-default attribute not preloading...

defmodule McFun.Games.Playlist do
  use Ash.Resource,
    data_layer: AshPostgres.DataLayer,
    extensions: [
      AshGraphql.Resource
    ]

  alias McFun.Games.PlaylistEntry
  alias McFun.Games.Game

  postgres do
    schema("games")
    repo(McCore.Repo)
    table("playlists")
  end

  relationships do
    many_to_many :games, Game do
      through(PlaylistEntry)
      source_attribute_on_join_resource(:playlist_id)
      destination_attribute_on_join_resource(:asset_id)
    end
  end
end

  postgres do
    schema("games")
    repo(McCore.Repo)
    table("playlist_entries")
  end

  relationships do
    belongs_to :playlist, Playlist do
      source_attribute(:playlist_id)
      primary_key?(true)
      allow_nil?(false)
      attribute_type(:integer)
    end

    belongs_to :game, Game do
      source_attribute(:asset_id)
      primary_key?(true)
      allow_nil?(false)
      attribute_type(:integer)
    end

  postgres do
    schema("games")
    repo(McCore.Repo)
    table("assets")
  end
end