I simply created a second dropdown by copying and pasting the official Angular UI Bootrstrap Dropdown sample and now neither one pulls down the menu. See plunker at
http://plnkr.co/edit/Xpp4sBSOoCK2lNZN3ZrL?p=preview
<!-- Single button 1-->
<div class="btn-group" dropdown is-open="status.isopen">
<button id="btn1" type="button" class="btn btn-primary dropdown-toggle" ng-disabled="disabled">
Button dropdown <span class="caret"></span>
</button>
<ul class="dropdown-menu" role="menu">
<li><a href="#">Action</a></li>
<li><a href="#">Another action</a></li>
<li><a href="#">Something else here</a></li>
<li class="divider"></li>
<li><a href="#">Separated link</a></li>
</ul>
</div>
<!-- Single button 2-->
<div class="btn-group" dropdown is-open="status.isopen">
<button id="btn2" type="button" class="btn btn-primary dropdown-toggle" ng-disabled="disabled">
Button dropdown1 <span class="caret"></span>
</button>
<ul id="list2" class="dropdown-menu" role="menu">
<li><a href="#">Action</a></li>
<li><a href="#">Another action</a></li>
<li><a href="#">Something else here</a></li>
<li class="divider"></li>
<li><a href="#">Separated link</a></li>
</ul>
</div>