Custom Front List wrongly rendered only for the first record

Hi,
I'm using the Custom display for the Front List.
In the Body Code section I have some "HTML/PHP code that it should be rendered once for every record in the list" like this:

<div>
    <p>{answer.title}</p>
    <form method="post" action="index.php?option=com_chronoforms5&view=form&Itemid=178&lang=it">
         <input type="hidden" name="answer_id" value="{answer.id}" />
         <input type="submit" value="Reply" />
    </form>
</div>

The problem is that this code is correctly rendered in each record except for the first one where is rendered without the form tag like this:

<div>
    <p>{answer.title}</p>
    <input type="hidden" name="answer_id" value="{answer.id}" />
    <input type="submit" value="Reply" />
</div>

I noticed that only the first record is enclosed in a form tag, probably this is the reason cause I think that there can not be a form within another for.
Here is the list rendered:

<div class="chrono-page-container">
       <form action="/index.php?option=com_chronoconnectivity5&cont=lists&ccname=Answers&Itemid=169&lang=it" method="post" name="admin_form" id="admin_form">
       <div>
            <p>{answer.title}</p>
            <input type="hidden" name="answer_id" value="{answer.id}" />
            <input type="submit" value="Reply" />
       </div>
       </form>
       <div>
           <p>{answer.title}</p>
           <form method="post" action="index.php?option=com_chronoforms5&view=form&Itemid=178&lang=it">
                <input type="hidden" name="answer_id" value="{answer.id}" />
                <input type="submit" value="Reply" />
           </form>
       </div>
       <div>
           <p>{answer.title}</p>
           <form method="post" action="index.php?option=com_chronoforms5&view=form&Itemid=178&lang=it">
                <input type="hidden" name="answer_id" value="{answer.id}" />
                <input type="submit" value="Reply" />
           </form>
       </div>
       <div>
           <p>{answer.title}</p>
           <form method="post" action="index.php?option=com_chronoforms5&view=form&Itemid=178&lang=it">
                <input type="hidden" name="answer_id" value="{answer.id}" />
                <input type="submit" value="Reply" />
           </form>
       </div>	
</div>

As you can see except for the first one, all the others record are correctly rendered.
What's wrong?
Thanks in advance

Hi Max,
this is exactly what I thought, thanks for confirming it.
I think I will use javascript onsubmit

Regards