title: Issue with md-autocomplete?
body: <p>I am using <a href="https://material.angularjs.org/1.1.4/api/directive/mdAutocomplete" rel="nofollow noreferrer">this</a> for autocomplete.</p>
  
  <p>If user wants to search his/her name and he/she types the name, after three characters the respective names will come (the search bar available in top bar on dashboard).</p>
  
  <p>After scrolling the dashboard user wants to search for the user, related user names are displaying.</p>
  
  <p>But we are getting response from server.</p>
  
  <p>This is happening when I scroll the dashboard (at the top its working fine).</p>
  
  <pre><code>&lt;form id="search" class="navbar-form navbar-right app-search" role="search" ng-controller="SearchCtrl"&gt;
      &lt;md-autocomplete class = "searchShape"
                       ng-disabled="false"
                       md-no-cache="true"
                       md-selected-item="selectedItem"
                       md-search-text-change="searchTextChange(searchText)"
                       md-search-text="searchText"
                       md-selected-item-change="selectedItemChange(item)"
                       md-items="item in querySearch(searchText)"
                       md-item-text="item.name"
                       md-min-length="0"
                       placeholder="search"
                       md-menu-class="autocomplete-custom-template"&gt;
          &lt;md-item-template&gt;
              &lt;span class="item-title" ng-click="navigate();searchText=''"&gt;
                  &lt;img ng-if="item.type=='USER'" ng-src="{{item.url}}" height="20" width="20" class="img-circle"/&gt;
                  &lt;span&gt; {{item.name}} &lt;/span&gt;
              &lt;/span&gt;
          &lt;/md-item-template&gt;
      &lt;/md-autocomplete&gt;
  &lt;/form&gt;
  </code></pre>