title: Xamarin VerticalTextView dont show text
body: <p>I'm using following code for VerticalTextView, It works when the text is in english, but nothing when the text is in hebrew.
  If i mix, then it shows when the text starts with english and then continues with hebrew, but not the other way around.
  I thought its about <code>TextDirection</code> but i dont see any change with setting it to ltr (for example).
  Any ideas?</p>
  
  <p><a href="https://gist.github.com/trinnguyen/358d5adb3bb964962e4af560ab0759ae" rel="nofollow noreferrer">https://gist.github.com/trinnguyen/358d5adb3bb964962e4af560ab0759ae</a></p>