title: How to prevent matching two routes with react-router v4?
body: <p>I have the following two routes: <code>/items</code> and <code>/items/buy</code>.</p>
  
  <p>Each route corresponds to a Tab in a single view. Both routes are rendered with an exact prop, but still, two tabs are being marked as active when navigating to <code>/items/buy</code>. </p>
  
  <p>I already tried using <code>withRouter</code>, but I noticed changing <code>/items</code> to <code>/items/sell</code> fixes the problem, but I don't wanna have that route.</p>
  
  <p>I understand rrv4 is matching the first part of my route <code>/items</code> and the other route too <code>/items/buy</code>, but I think that shouldn't be happening if I'm using <code>exact</code>. Any clues on why this is happening?</p>
  
  <p>Ahh I forgot to say I am already using a Switch.</p>
  
  <p>Thanks for your help!</p>