title: Android studio not able to pin the tabs
body: <p>I have a small querie regarding android studio layout. My preview and projects tabs are not showing. I found them in <strong>View -> Tool windows</strong>. but not able to pin them. They just come and go. not able to catch them :(</p>
  
  <p>See image for reference :</p>
  
  <p><a href="https://i.stack.imgur.com/JuJeS.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/JuJeS.png" alt="enter image description here"></a>   </p>
  
  <p>As you can see in below image with red circle. that tabs are missing. that i am finding. tabs for Project, preview, Build anything not found.</p>
  
  <p><a href="https://i.stack.imgur.com/Cm41g.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Cm41g.jpg" alt="enter image description here"></a></p>
  
  <p>Any help please. Thank you.</p>