title: Safari strange behaviour with Range header
body: <p>Safari loading not valid range of binary data. You can see it on screenshot. I think it somehow connected with cache. Because first attempt always correct. Works perfect in other browsers.
  See Range in request and Range in response.</p>
  
  <p><img src="https://i.stack.imgur.com/xOcAZ.png" alt="Screenshot from debug console"></p>