title: Legacy icon does not show when using adaptive icon
body: <p>I just converted my app icon to be compatible with android o's adaptive icons using the <code>Image Asset Studio</code> in android studio</p>
  
  <p>when I run my project now on my device running API 25 I get the default green android icon and not my icon.</p>
  
  <p>this is my manifest</p>
  
  <pre><code>&lt;application
      android:icon="@mipmap/ic_launcher"
      android:label="@string/app_name"
      android:theme="@style/AppTheme"
      android:allowBackup="false"
      android:roundIcon="@mipmap/ic_launcher_round"
      tools:replace="allowBackup"
      tools:ignore="GoogleAppIndexingWarning"&gt;
  </code></pre>
  
  <p>and these are the files the image asset studio created</p>
  
  <p><a href="https://i.stack.imgur.com/cmkN3.png" rel="noreferrer"><img src="https://i.stack.imgur.com/cmkN3.png" alt="enter image description here"></a></p>
  
  <p>Is this just an Android Studio bug or did I miss something?</p>