[5.x] multiple instances of same form

[T4zi011]

I have upgraded the plugin from 3.13.37 to 5.5.8 (Craft CMS 5.4.0.1), I have a form "contatti", I need more instances in same page of this form.

Code first time

{% include "_includes/_form-contatti.twig" with {
    'formId': 'hp-form',
    'classes': 'px-xl-5 pt-4 needs-validation',
    'prefix': 'hpf-',
    'grid': 'n',
    'buttonType': 'normal',
    'buttonText': 'Invia',
    'prodotto': 'vetrate',
    'campagna': ''
} %}

Code second time

% include "_includes/_form-contatti.twig" with {
        'formId': '',
        'classes': 'px-xl-5 needs-validation ',
        'prefix': 'bf-',
        'grid': 'y',
        'buttonType': 'arrow',
        'buttonText': 'Invia',
        'prodotto': prodotto is defined ? prodotto : '',
        'campagna': ''
      } %}

template "_includes/_form-contatti.twig"

{% set formSection = freeform.form("contatti") %}
    {{ formSection.renderTag({
        attributes: {
            novalidate: true,
            class: classes is defined ? classes : '',
            id: formId is defined ? formId : '',
        },
        disable: ["submitButtons"],
        returnUrl: siteUrl~"grazie?token={{ submission.token }}"
    }) }}

Code generated
first time
<form novalidate="" class="px-xl-5 pt-4 needs-validation" id="hp-form" method="post" data-freeform="" data-id="bfc992-form-jGa8WvEYP-V526EA6RD-p6TdbHAPOisOzvX0LTasEuhe7ukOIXlcX2KtGMZC" data-handle="contatti" data-success-message="Form has been submitted successfully!" data-error-message="Sorry, there was an error submitting the form. Please try again.">

second time
<form novalidate="" class="px-xl-5 pt-4 needs-validation px-xl-5 needs-validation" id="hp-form" method="post" data-freeform="" data-id="bfc992-form-jGa8WvEYP-V526EA6RD-qCzuGxrxNIxaM0Job5i8Ja9EFheQOIFLGVm9eraB" data-handle="contatti" data-success-message="Form has been submitted successfully!" data-error-message="Sorry, there was an error submitting the form. Please try again.">

How you can see, the attributes aren't overriding but concatenated. Previous versions did not have any issues, is it possible to achieve the same result with the latest version?