title: Android 3.0 Canary 5 layout editor issue
body: <p>I am new in android studio, and i just installed the version 3.0 canary 5 because it's supports Kotlin (and i want to learn kotlin). When I create i new project, the design editor seems to not work properly. When i drag a a component like a button, he just go on the corner and become not visible. But when i run the app and view it in my android phone it works correctly. The problem i guess is just with the design editor of android studio.</p>
  
  <p><a href="https://i.stack.imgur.com/EZFDQ.png" rel="nofollow noreferrer">Screenshot of the problem</a></p>
  
  <p>Any ideas?</p>