I'm developing an Angular application that registers users in a REST API. The problem is that after calling the API, I receive a 200 (OK) response with seemingly valid data, but when I list the users again, the newly registered user does not appear.

I want to understand:

1-If the user was actually saved in the API or if the success response was returned without persisting the data.

2-If there is something in my Angular code preventing the new user from appearing.

cadastrar(usuario: CadastroRequest): void {
    this.consultaAPICadastroService.cadastrarUsuario(usuario)
      .subscribe({
        next: (novoUsuario) => {
          console.log("✅ Resposta da API:", novoUsuario);
          if (novoUsuario && novoUsuario.id) {
            console.log("