Good I have my next query, I have a SELECT, where to open it in a form, I have to click on TWICE if not open, any possible solution? copy and paste it like this on the page. I leave a link with my code.

<span>Subject</span>
        <select class="mdb-select">
            <option value="" disabled>Choose option</option>
            <option value="1" selected>Feedback</option>
            <option value="2">Report a bug</option>
            <option value="3">Feature request</option>
            <option value="4">Feature request</option>
        </select>

<script type="text/javascript">
// Material Select Initialization
$(document).ready(function() {
$('.mdb-select').materialSelect();
});
</script>