title: Android system navigation bar background color
body: <p>My app's system navigation bar doesn't work as expected. Here is a screenshot showing two different Android versions's navigation bar.</p>
  
  <p><a href="https://i.stack.imgur.com/B44ck.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/B44ck.png" alt="Left side image is API 28, Right side image is 25"></a></p>
  
  <p>Left side image is API 28, Right side image is 25</p>