title: Bootstrap dropdown in collapse not showing on first attempt
body: <p>I have a dropdown menu inside a nav-collapse.</p>
  
  <p>When I reduce the window's width (eg: 700px), the navbar correctly collapses, then I click on btn-navbar to un-collapse it, then I click on the dropdown, but it does not drop down, the menu does not show. If then I collapse and un-collapse again, the dropdown starts working.</p>
  
  <p>The same happens when the window's width is small from the beginning.</p>
  
  <p>It's like the height of the collapsed part was fixed at the beginning, and it doesn't let the dropdown do its thing.</p>
  
  <pre><code>&lt;!DOCTYPE html&gt;
  &lt;html&gt;
      &lt;head&gt;
          &lt;meta http-equiv="content-type" content="text/html; charset=utf-8" /&gt;
          &lt;link rel="stylesheet" type="text/css" media="screen" href="css/bootstrap.css" /&gt;
          &lt;link rel="stylesheet" type="text/css" media="screen" href="css/bootstrap-responsive.css" /&gt;
          &lt;script src="js/jquery.js"&gt;&lt;/script&gt;
          &lt;script src="js/bootstrap.js"&gt;&lt;/script&gt;
      &lt;/head&gt;
      &lt;body&gt;
          &lt;div class="navbar"&gt;
              &lt;div class="navbar-inner"&gt;
                  &lt;div class="container"&gt;
  
                      &lt;!-- .btn-navbar is used as the toggle for collapsed navbar content --&gt;
                      &lt;button class="btn btn-navbar" data-toggle="collapse" data-target=".nav-collapse"&gt;
                          &lt;span class="icon-bar"&gt;&lt;/span&gt;
                          &lt;span class="icon-bar"&gt;&lt;/span&gt;
                          &lt;span class="icon-bar"&gt;&lt;/span&gt;
                      &lt;/button&gt;
  
                      &lt;!-- Be sure to leave the brand out there if you want it shown --&gt;
                      &lt;a class="brand" href="#"&gt;Project name&lt;/a&gt;
  
                      &lt;!-- Everything you want hidden at 940px or less, place within here --&gt;
                      &lt;div class="nav-collapse"&gt;
                          &lt;ul class="nav pull-right"&gt;
                              &lt;li class="dropdown"&gt;
                                  &lt;a href="#" class="dropdown-toggle" data-toggle="dropdown"&gt;
                                  Anonymous &lt;b class="caret"&gt;&lt;/b&gt;
                                  &lt;/a&gt;
                                  &lt;ul class="dropdown-menu"&gt;
                                      &lt;li&gt;
                                          &lt;a href=''&gt;&lt;i class='icon-chevron-right'&gt;&lt;/i&gt; Login&lt;/a&gt;
                                      &lt;/li&gt;
                                      &lt;li&gt;
                                          &lt;a href=''&gt;&lt;i class='icon-plus'&gt;&lt;/i&gt; Register&lt;/a&gt;
                                      &lt;/li&gt;
                                  &lt;/ul&gt;
                              &lt;/li&gt;
                          &lt;/ul&gt;
                      &lt;/div&gt;
  
                  &lt;/div&gt;
              &lt;/div&gt;
          &lt;/div&gt;
      &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p>Bootstrap v2.2.0</p>
  
  <p>Firefox 16.0.2</p>