I have trouble in getting materialze.js and fullpage.js working together. Here is an jsfiddle to demonstrate the problem. Fullpage.js is setup to jump in responsive mode at 640px. In normal-mode (641px and above) everythings works as expected. In responsive-mode everythings works fine, as long the Slideout-Menu (materialize.js) is not used. After the Slideout-Menu is been used, mouse-scrolling stopped completely. While keyboard-scrolling works fine.
See jsfiddle.net
materialize markup
<nav id="nav">
<ul id="sidenav" class="side-nav">
<li data-menuanchor="a"><a href="#a">a</a></li>
<li data-menuanchor="b"><a href="#b">b</a></li>
<li data-menuanchor="c"><a href="#c">c</a></li>
<li data-menuanchor="d"><a href="#d">d</a></li>
<li data-menuanchor="e"><a href="#e">e</a></li>
</ul>
<ul id="quick-links" class="right">
<li data-menuanchor="b"><a href="#b">b</a></li>
<li data-menuanchor="c"><a href="#c">c</a></li>
</ul>
<ul>
<li><a id="sidenav-toggle" data-activates="sidenav" href="#!">menu</a></li>
</ul>
</nav>
fullpage markup
<div id="fullpage">
<div id="sa" class="section">a</div>
<div id="sb" class="section">b</div>
<div id="sc" class="section">c</div>
<div id="sd" class="section">d</div>
<div id="se" class="section">e</div>
</div>
materialized js
$("#sidenav-toggle").sideNav({
closeOnClick: true
});
fullpage js
$('#fullpage').fullpage({
menu: '#nav',
anchors: ['a', 'b', 'c', 'd', 'e'],
normalScrollElements: '#nav',
paddingTop: 0,
paddingBottom: 0,
responsiveWidth: 640
});