title: MVC bootstrap navbar not working after running NuGet updates
body: <p>An MVC app broke after we updated all the NuGet packages. After trying everything I created a new MVC app, updated the NuGet packages and the basic navbar...</p>
  
  <pre><code>&lt;div class="navbar navbar-inverse navbar-fixed-top"&gt;
      &lt;div class="container"&gt;
          &lt;div class="navbar-header"&gt;
              &lt;button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-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;a class="navbar-brand" href="/"&gt;Application name&lt;/a&gt;
          &lt;/div&gt;
          &lt;div class="navbar-collapse collapse"&gt;
              &lt;ul class="nav navbar-nav"&gt;
                  &lt;li&gt;&lt;a href="/"&gt;Home&lt;/a&gt;&lt;/li&gt;
                  &lt;li&gt;&lt;a href="/Home/About"&gt;About&lt;/a&gt;&lt;/li&gt;
                  &lt;li&gt;&lt;a href="/Home/Contact"&gt;Contact&lt;/a&gt;&lt;/li&gt;
              &lt;/ul&gt;
  
  &lt;ul class="nav navbar-nav navbar-right"&gt;
      &lt;li&gt;&lt;a href="/Account/Register" id="registerLink"&gt;Register&lt;/a&gt;&lt;/li&gt;
      &lt;li&gt;&lt;a href="/Account/Login" id="loginLink"&gt;Log in&lt;/a&gt;&lt;/li&gt;
  &lt;/ul&gt;
  
  
          &lt;/div&gt;
      &lt;/div&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>... looks like this ...</p>
  
  <p><a href="https://i.stack.imgur.com/VkNu1.png" rel="noreferrer"><img src="https://i.stack.imgur.com/VkNu1.png" alt="NavBar"></a></p>
  
  <p>...and clicking the icon...</p>
  
  <p><a href="https://i.stack.imgur.com/flggT.png" rel="noreferrer"><img src="https://i.stack.imgur.com/flggT.png" alt="NavBar Open"></a></p>
  
  <p>Any ideas what could be causing this?</p>
  
  <p>Have tried manually adding Bootstrap.css and Bootstrap.js to _Layout.vbhtml, but no difference</p>
  
  <p>Thank you</p>