JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="http://semantic-ui.com/dist/semantic.css">
<script src="http://semantic-ui.com/dist/semantic.js"></script>
<div class="ui fluid search selection dropdown">
  <input name="organization" type="hidden">
  <input class="search" autocomplete="off" tabindex="0"><span class="text"></span>
  <div class="menu transition hidden" tabindex="-1">
    <div class="item" data-text="';alert(String.fromCharCode(88,83,83))//';alert(String.fromCharCode(88,83,83))//&quot;; alert(String.fromCharCode(88,83,83))//&quot;;alert(String.fromCharCode(88,83,83))//-- ></SCRIPT>&quot;>'><SCRIPT>alert(String.fromCharCode(88,83,83))</SCRIPT>">
      ';alert(String.fromCharCode(88,83,83))//';alert(String.fromCharCode(88,83,83))//"; alert(String.fromCharCode(88,83,83))//";alert(String.fromCharCode(88,83,83))//-- &gt;&lt;/SCRIPT&gt;"&gt;'&gt;&lt;SCRIPT&gt;alert(String.fromCharCode(88,83,83))&lt;/SCRIPT&gt;
  </div>
</div>
</div>

<div class="ui fluid search selection dropdown">
  <input name="organization" type="hidden">
  <input class="search" autocomplete="off" tabindex="0"><span class="text"></span>
  <div class="menu transition hidden" tabindex="-1">
    <div class="item">
      ';alert(String.fromCharCode(88,83,83))//';alert(String.fromCharCode(88,83,83))//"; alert(String.fromCharCode(88,83,83))//";alert(String.fromCharCode(88,83,83))//-- &gt;&lt;/SCRIPT&gt;"&gt;'&gt;&lt;SCRIPT&gt;alert(String.fromCharCode(88,83,83))&lt;/SCRIPT&gt;
  </div>
</div>
</div>

CSS

body {
  padding: 1em;
}

JavaScript

// Override jQuery's `data()` function to snoop for Semantic-UI calls.
    const { data } = $.fn;
    $.fn.data = function (...args) {
        if (args[0] === 'module-dropdown' && args[1]) {
          // Semantic-UI uses a data set call to store its dropdown instance.
          // This provides us a places to hook-in and apply text escaping.
          const instance = args[1];
          const setText = instance.set.text;
          instance.set.text = function (t) {
            return setText.call(this, instance.escape.string(t));
          };
        }
        return data.call(this, ...args);
    };

$('.ui.dropdown.selection').dropdown();