title: osx complains that app is from unidentified developer, although it passes all validations
body: <p>I have developer certificate (bought it from apple 99$ per year) , signed my application with xcode </p>
  
  <p><a href="https://i.stack.imgur.com/2X2Et.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/2X2Et.png" alt="code signing parameters"></a></p>
  
  <p>here also output from spctl</p>
  
  <pre><code>spctl  --assess -v /Volumes/&lt;valume&gt;/myapp.app
  /Volumes/&lt;valume&gt;/myapp.app: accepted
  source=Developer ID
  </code></pre>
  
  <p>I have check also my application via RB app checker light
  all seems ok , app checker can see that app is signed.
  but when I creatin dmg which contains my app, uploading it to our server, 
  the downloaded app cant be opened, because osx complains that app is from unidentified developer. I'm out of ideas what the reason could be...</p>