Approved, thanks! 🖖

You are correct. There is a bug in the C# translation. I've asked the translator to fix it. Thanks for reporting!

And in my original Java Kata, it is just like you thought it should be...

  @Test
  public void emptyZoo() {    
    final String input = "";
    final String[] expected = {
      "", 
      ""
    };
    assertArrayEquals(expected, Dinglemouse.whoEatsWho(input));
  }

Which language are you referring to where this is not the case? It might be a bug in a translation.
Thanks