Handle_event updating the wrong record

I have this code snippet from the getting started guide for ash_phoenix:
Repo GitHub - albinkc/my_ash_phoenix_app_tut · GitHub

def handle_event("update_post", %{"form" => form_params}, socket) do
    case AshPhoenix.Form.submit(socket.assigns.update_form, params: form_params) do
      {:ok, _post} ->
        posts = Blog.list_posts!()

        {:noreply, assign(socket, posts: posts, post_selector: post_selector(posts))}

      {:error, update_form} ->
        {:noreply, assign(socket, update_form: update_form)}
    end
  end

[debug] HANDLE EVENT "update_post" in MyAshPhoenixAppWeb.PostsLive
  Parameters: %{"form" => %{"content" => "uh", "post_id" => "ae34b684-7308-42eb-8ea1-f0455fcb66a6"}}
[debug] QUERY OK source="posts" db=2.3ms idle=1555.3ms
UPDATE "posts" AS p0 SET "content" = $1::text::text WHERE (p0."id"::uuid = $2::uuid) RETURNING p0."id", p0."title", p0."content" ["uh", "f38c0f31-42f8-4bce-847c-ec3dd3593d6b"]
↳ AshPostgres.DataLayer.update_query/4, at: lib/data_layer.ex:1380
[debug] QUERY OK source="posts" db=0.6ms idle=1561.4ms
SELECT p0."id", p0."title", p0."content" FROM "posts" AS p0 []
↳ anonymous fn/3 in AshPostgres.DataLayer.run_query/2, at: lib/data_layer.ex:767
[debug] Replied in 12ms

notice the uuids are different in the form_params vs the postgres statement. Furthermore, if I delete all but one record from the db table and then try the update, I get this cryptic warning. No db update occurs in this case.

[debug] HANDLE EVENT "update_post" in MyAshPhoenixAppWeb.PostsLive
  Parameters: %{"form" => %{"content" => "hehe", "post_id" => "43c61b5a-18d4-4c74-9063-2c90fee59724"}}
[debug] QUERY OK source="posts" db=1.0ms idle=1857.1ms
UPDATE "posts" AS p0 SET "content" = $1::text::text WHERE (p0."id"::uuid = $2::uuid) RETURNING p0."id", p0."title", p0."content" ["hehe", "f38c0f31-42f8-4bce-847c-ec3dd3593d6b"]
↳ AshPostgres.DataLayer.update_query/4, at: lib/data_layer.ex:1380
warning: the following fields are unknown when raising Ash.Error.Changes.StaleRecord: [filters: %{id: "f38c0f31-42f8-4bce-847c-ec3dd3593d6b"}]. Please make sure to only give known fields when raising or redefine Ash.Error.Changes.StaleRecord.exception/1 to discard unknown fields. Future Elixir versions will raise on unknown fields given to raise/2
  (ash 3.3.3) lib/ash/error/changes/stale_record.ex:5: Ash.Error.Changes.StaleRecord."exception (overridable 1)"/1
  (ash 3.3.3) lib/ash/error/changes/stale_record.ex:5: Ash.Error.Changes.StaleRecord.exception/1
  (ash 3.3.3) lib/ash/actions/update/update.ex:183: Ash.Actions.Update.run/4
  (ash 3.3.3) lib/ash.ex:2502: Ash.update/3
  (ash_phoenix 2.1.1) lib/ash_phoenix/form/form.ex:2043: AshPhoenix.Form.with_changeset/2
  (ash_phoenix 2.1.1) lib/ash_phoenix/form/form.ex:1861: AshPhoenix.Form.submit/2
  (ash_phoenix 2.1.1) lib/ash_phoenix/form/form.ex:1790: AshPhoenix.Form.submit/2
  (my_ash_phoenix_app 0.1.0) lib/my_ash_phoenix_app_web/posts_live.ex:79: MyAshPhoenixAppWeb.PostsLive.handle_event/3
  (phoenix_live_view 1.0.0-rc.6) lib/phoenix_live_view/channel.ex:508: anonymous fn/3 in Phoenix.LiveView.Channel.view_handle_event/3
  (telemetry 1.2.1) /Users/albin/projects/ash_builder/my_ash_phoenix_app/deps/telemetry/src/telemetry.erl:321: :telemetry.span/3
  (phoenix_live_view 1.0.0-rc.6) lib/phoenix_live_view/channel.ex:260: Phoenix.LiveView.Channel.handle_info/2
  (stdlib 6.0) gen_server.erl:2173: :gen_server.try_handle_info/3
  (stdlib 6.0) gen_server.erl:2261: :gen_server.handle_msg/6
  (stdlib 6.0) proc_lib.erl:340: :proc_lib.wake_up/3

[warning] Unhandled error in form submission for MyAshPhoenixApp.Blog.Post.update

This error was unhandled because Ash.Error.Changes.StaleRecord does not implement the `AshPhoenix.FormData.Error` protocol.

** (Ash.Error.Changes.StaleRecord) Attempted to update stale record of MyAshPhoenixApp.Blog.Post

[debug] Replied in 4ms

how can I make this work? TIA