title: Zenity won't render Unicode characters
body: <p>I'm trying to run a simple Zenity dialog where I catch user's input:</p>
  
  <p><code>zenity --forms --title="Title" --add-entry="Comment"</code></p>
  
  <p>When I write in ASCII characters it catches them just fine, however, I when I the input contains Unicode characters (namely Hebrew) it outputs them as question marks. 
  I know for sure that it's Zenity's fault, as if I try to change the title as following: <code>--title="שלום"</code> it would fail to launch altogether.</p>
  
  <p>I'm running on Ubuntu Xenial with all latest patches. Zenity version is 3.18.1.1.</p>