JSFiddle - React, Tailwind, and code Playground

HTML

<h1>Form is not submitted on enter keypress.</h1>
<button id="open-dialog-form">Open Dialog Form</button>

<div id="dialog-form">
    <form>
        <input type="text"/>
        <input type="text"/>
    </form>
</div>

JavaScript

$("#dialog-form").dialog({
    autoOpen: false
});

$("#open-dialog-form").click(function() {
    $("#dialog-form").dialog("open");
});