Materialize Tabs suddenly doesn't work anymore
<p>I'm using the Tabs Javascipt from Materialize in several Rails projects. But suddenly in my last project it doesn't work any-more (it did work some commits ago, but I can't seem to solve it).</p>

<p>I've added a demo-snippet (the one from Materialize, including the intitializer) to a blank page to see if it's page related, but also on this page (controlled by a different controller) it doesn't seem to work.</p>

<p>It's just showing the content in 1 list, doesn't show the activated bar and when clicking it, it jumps to div within the list of content.</p>

<p>Here's my simple About page:</p>

<pre><code>&lt;h3&gt;About Us&lt;/h3&gt;

&lt;div class="row"&gt;
&lt;div class="col s12"&gt;
  &lt;ul class="tabs"&gt;
    &lt;li class="tab col s3"&gt;&lt;a href="#test1"&gt;Test 1&lt;/a&gt;&lt;/li&gt;
    &lt;li class="tab col s3"&gt;&lt;a class="active" href="#test2"&gt;Test 2&lt;/a&gt;&lt;/li&gt;
    &lt;li class="tab col s3 disabled"&gt;&lt;a href="#test3"&gt;Disabled Tab&lt;/a&gt;&lt;/li&gt;
    &lt;li class="tab col s3"&gt;&lt;a href="#test4"&gt;Test 4&lt;/a&gt;&lt;/li&gt;
  &lt;/ul&gt;
&lt;/div&gt;
&lt;div id="test1" class="col s12"&gt;Test 1&lt;/div&gt;
&lt;div id="test2" class="col s12"&gt;Test 2&lt;/div&gt;
&lt;div id="test3" class="col s12"&gt;Test 3&lt;/div&gt;
&lt;div id="test4" class="col s12"&gt;Test 4&lt;/div&gt;
</code></pre>

<p></p>

<pre><code>&lt;script&gt;
$(document).ready(function(){
$('ul.tabs').tabs();
  });
&lt;/script&gt;
</code></pre>

<p>...and here's the link to the page:
<a href="http://www.content-tree.com/pages/about" rel="nofollow">About Page</a></p>

<p>Can anyone help me out to solve this? (I'm probably overlooking something simple)</p>