<h4 dir="auto">Issue Description</h4>
<ul dir="auto">
<li>When Issue Happens<br>
When I want to scroll down in the Map during a lesson.</li>
<li>Steps To Reproduce</li>
<li>Open a lesson.</li>
<li>Click Map</li>
<li>Try to scroll down.</li>
</ul>
<h4 dir="auto">Browser Information</h4>
<ul dir="auto">
<li>Browser Name, Version<br>
Safari 9.0.3</li>
<li>Operating System<br>
OSX 10.11.3</li>
</ul>
<p dir="auto">This happens many times. When I click on the map tab, I cannot scroll down the list on the right. But I can scroll up normally.<br>
<a target="_blank" rel="noopener noreferrer nofollow" href="https://cloud.githubusercontent.com/assets/16045446/13109369/b980fca8-d5b3-11e5-948b-4d874153fc63.png"><img width="1280" alt="screen shot 2016-02-17 at 19 37 02" src="https://cloud.githubusercontent.com/assets/16045446/13109369/b980fca8-d5b3-11e5-948b-4d874153fc63.png" style="max-width: 100%;"></a><br>
It seems that the "menu" button displays abnormally as well.</p>