In After Effects CC, images added to listboxes fail to appear at first

Question

Given a simple listbox with images, created like so:
function buildUI(this_obj_) {
var winDef = (this_obj_ instanceof Panel)
? this_obj_
: new Window('palette', 'testing listbox',[194,174,644,406]);
winDef.ctl_list1 = winDef.add('listbox', [10,20+10+10,160+10,140+10], ["1                      ", "2                      ", "3                      "]);
winDef.ctl_list1.items[0].image = File("/valid/image/location/test1.png");
winDef.ctl_list1.items[1].image = File("/valid/image/location/test2.png");
winDef.ctl_list1.items[2].image = File("/valid/image/location/test3.png");
winDef.ctl_button5 = winDef.add('button', [332,189,416,215], 'OK');
winDef.ctl_button5.onClick = function () {this.parent.close(1);}
return winDef
var builtWin = buildUI(this);
if (builtWin.toString() == "[object Panel]") {
builtWin;
} else {
builtWin.show();
In After Effects CC, loading this script as a ScriptUI Panel (at least on OSX) initially shows no images, until some interface interaction is made (clicking on listbox, showing about box, sometimes switching apps, etc.).
Is there a way to get these images to show correctly on launch of the script? Anything I add to the script, including phantom buttons with notify("onClick") tricks, seems to run while the script is still being created (even if added after the panel being built/shown), and the initial "no-image" listbox is shown. I'm also curious to know if this behavior is the same on Windows, and if anyone can test this it would be great.

Answer 1

Appears to be a bug with CC, I even rewrote a test script using a different coding approach. I've filed bug reports before for listbox. I've gotten times where a multi-column list content will overlap from column to column. It fixes itself once you click on the listbox or attempt to resize a column.
Here's the setup I used:
  function TEST(thisObj){
  function TEST_buildUI(thisObj){
  var pal = (thisObj instanceof Panel) ? thisObj : new Window("palette", "Test", undefined, {resizeable:true});
  if (pal != null){
  var res ="group {orientation:'column', alignment:['fill','fill'], alignChildren:['fill','top'],\
  folderPathListbox: ListBox{alignment:['fill','fill'], properties:{multiline:true, numberOfColumns:1, showHeaders:true, columnTitles: ['TEST']}},\
  pal.grp = pal.add(res);
  ///CONTROL VARIABLES
  var folderPathListbox = pal.grp.folderPathListbox;
  ///POPULATE
  try{
  var listLen = 5;
  var curItem;
  for(var i=1; i<=listLen; i++){
  curItem = folderPathListbox.add('item', i);
  curItem.image = File("~/Desktop/Alert.png");
  }catch(err){alert(err)}
  pal.layout.layout(true);
  pal.grp.minimumSize = pal.grp.size;
  pal.layout.resize();
  pal.onResizing = pal.onResize = function () {this.layout.resize();}
  return pal;
  var rPal = TEST_buildUI(thisObj);
  if (rPal != null){
  if (rPal instanceof Window){
  rPal.center();
  rPal.show();
  TEST(this);