A double insertion occurs when using mx-select-oob with trongate-mx.

[jchouix]

Hi DC,
I encountered an issue while writing this code :

<?php   
$btn_attrs = array(
    'mx-get' => 'http://trongatev2.fr/tasks/show/2',
    'mx-select' => ".card-body",
    'mx-target' => ".task-content",
    'mx-select-oob'=> json_encode([
        ["select" => ".card-heading", "target"=> ".task-heading", "swap"=> "beforeend"],
        ["select" => ".card-footer a.button.edit", "target"=> ".task-footer", "swap"=> "afterbegin"]
    ])
);

echo form_button('show_task_btn', 'Show a Task', $btn_attrs);
?>
<br>
<br>
<h1>Response</h1>
<div class="task-heading"></div>
<div class="task-content"></div>
<div class="task-footer"></div>

Specifically, a double insertion occurred (see screenshot).
I investigated the cause of the bug and found that the function handleOobSwaps() is being called twice (at lines 418 and 719 of the trongate-mx.js file).
Removing line 719 fixes the issue (please verify this yourself).
Best regards.