title: TypeScript error TS2532, Object is possible undefined
body: <p>I installed WebStorm 2020.1 yesterday. </p>
  
  <p>Suddenly I got a bunch of TS2532 errors.</p>
  
  <p><a href="https://i.stack.imgur.com/QXg4M.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/QXg4M.png" alt="enter image description here"></a></p>
  
  <p>How can this be "possible undefined"? The <code>selectedOwner &amp;&amp;</code> protects against that?</p>
  
  <p>I tried to disabled this stupid error with <code>"strictNullChecks": false,</code> but has no effect.</p>