Stateful live component is mounted more than once

Questions & Help Questions
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3

My component:

defmodule BwWeb.CartComponent do
  use BwWeb, :live_component

  def mount(socket) do
    IO.puts("CartComponent mount")
    {:ok, assign(socket, show: false)}
  end

  def update(
    %{
      id: _id,
      cart_products: cart_products,
      cart_id: cart_id,
      store_id: store_id,
      store_slug: store_slug,
      show_checkout_button: show_checkout_button,
    } = _assigns, socket) do
    {:ok, assign(
      socket,
      cart_products: cart_products,
      cart_id: cart_id,
      store_id: store_id,
      store_slug: store_slug,
      show_checkout_button: show_checkout_button
    )}
  end

The component is called in the live view template:

   <%= live_component(
      @socket,
      BwWeb.CartComponent,
      id: Ecto.UUID.generate(),
      cart_products: @cart_products,
      cart_id: @cart_id,
      store_id: @store.id,
      store_slug: @store.slug,
      show_checkout_button: true
    ) %>

In the live view I handle a pubsub notification:

  def handle_info({Bw.Man.Cart, [cart_id, _], _}, socket) do
    IO.puts("handle_info")
    cart_products = Bw.Man.Cart.get_cart_products(cart_id, socket.assigns.store.id)
    {:noreply, assign(socket, cart_products: cart_products)}
  end

Always when this handle_info is executed, the CartComponent is mounted.