ID 2020 bug - checkbox not shown.
in ID2019 everything is Ok - the checkbox is visible. But in 2020 - not!
var w = new Window("dialog");
  var list = w.add ("listbox", undefined, ["One", "Two", "Three", "Four"]);
  list.items[1].checked = true;
w.show();
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 Yury Bederov
    
 shared this idea
Yury Bederov
    
 shared this idea
      
    Thanks for reporting the issue
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-InDesign Team
 
          