[SalesForce] ui:scrollerWrapper not working in Salesforce1

Newly added Lightning component in the Winter '17, ui:scrollerWrapper which claims to create a container that enables native scrolling in Salesforce1 is not working in Salesforce1 app.

CODE: (to reproduce the issue in Winter '17 pre-release org)

Component:-

<aura:component implements="force:appHostable, flexipage:availableForAllPageTypes">
            <div class="mainWrap">
                <ui:scrollerWrapper class="sWrapTest">
                    <ul class="testDiv">        
                       <li>In the Winter ’17 release, many of your favorite features 
                           are easier to use than ever before. 
                       </li>
                       <li>Lightning Experience has a brand new                      
                           navigation bar and lots of critical sales,
                           service, and analytics capabilities. 
                       </li>
                       <li>You’ve got more options for managing customer and partner
                           communities, running your business from your phone, 
                           and keeping your data and your users secure. 
                       </li>
                       <li>Not to mention plentiful new
                           customization and app development features, 
                           including custom Lightning apps.
                       </li>                      
                       <li>Other features require direct action by an administrator 
                           before users can benefit from the new functionality.
                       </li>
                       <li>If a key feature is also available in Salesforce1, 
                           our mobile app, we mention that in the feature description. 
                       </li>
                       <li>ui:scrollerWrapper
                           Creates a container that enables native scrolling in 
                           Salesforce1.
                       </li>

                    </ul>
                </ui:scrollerWrapper>
            </div>
        </aura:component>

Style:-

.THIS .sWrapTest {
    height:100px;
    width:100px;
}

ui:scrollerWrapper is not working in the Salesforce1 app. I've tested the same in iPad, iPhone and android devices.

It works fine in Chrome browser, when opened in device view simulator, when the div is dragged downwards or towards the right.

But I'm not able to scroll the contents inside ui:scrollerWrapper in the Salesforce1 app.