Array Validations not showing in twig

[lcabre]

Hi @barryvdh,
First of all, thank you very much for the package!, it's helping me a lot with a new project.

Like de title says, i need some guide to figure out why i cant get array validations errors in twig.
I can see those errors in blade ViewErrorBag, but not in twig.

Here a simple example:

web.php

Route::any('/test', 'FormController@demo');

FormController.php

public function demo(Request $request){
        $form = $this->createFormBuilder(null)
            ->add('name', TextType::class)
            ->add('file', FileType::class, [
                'multiple' => true
            ])
            ->add('save', SubmitType::class, ['label' => 'Save'])
            ->getForm();

        $form->handleRequest($request);

        if ($form->isSubmitted()) {
            $this->validateForm($form, $request, [
                'name' => 'required|min:10',
                "file" => "required|max:2",
                "file.*" => "file|max:1024|mimes:png"//Can't get this validations errors in twig
            ]);
            dd($form->getData());
        }

        return view('formularios.form_test', ['form' => $form->createView()]);
    }

form_test.blade.php

...
<div class="container">
        <div class="row">
            <div class="col-md-12">
                @formStart($form, [ 'attr' => ['autocomplete' => 'off']])
                @formWidget($form)
                @formEnd($form)
            </div>
        </div>
        <div class="row">
            <div class="col-md-12">
                @if ($errors->any()) //to check in ViewErrorBag
                    <div class="alert alert-danger">
                        <ul>
                            @foreach ($errors->all() as $error)
                                <li>{{ $error }}</li>
                            @endforeach
                        </ul>
                    </div>
                @endif
            </div>
        </div>
    </div>
...

And, for example if I add three jpg files (the validation only accept png), this is what i get:

As you can see, twig only shows the 'file' validation, but not the 'file.*' one.
Any help would be appreciated.

Regards,
Leo