Behavioral differences between MacOS versions for a resizing script (Illustrator 30.2.1)

Hello,

I have an extendscript that imports a file and resizes that import based on the value in /tmp/valeurTauxReduc.txt (for example 80)

app.executeMenuCommand('preview');
var docRef = activeDocument;
var lireTauxReduc = new File ("/tmp/valeurTauxReduc.txt");
lireTauxReduc.encoding = "UTF8";  
lireTauxReduc.lineFeed = "unix";  
lireTauxReduc.open("r");  
var resultlireTauxReduc = lireTauxReduc.readln();
numbReduc = parseInt(resultlireTauxReduc);
redraw();

var saveFileTempo = new File("path/to/file.pdf");
fichierPdf.copy(saveFileTempo);
docRef.placedItems[0].relink(saveFileTempo);  //  Importe le fichier
// Incorporer l'image importée
docRef.placedItems[0].embed();
// Mise à l'échelle du décor uniquement
if (lireTauxReduc.exists == true){
     docRef.groupItems[0].resize(numbReduc, numbReduc, true, false, false, false, 100, Transformation.CENTER);
}
redraw();

It works flawlessly on my Mac (Sonoma 14.6.1) but for some reason doesn’t do the resize() on a more recent one (Tahoe 26.3.1).
I’ve tried debuging it in many ways (alerts, try-catches, using the debug extension for vs code) but to no avail, the script does the resize but the items are not resized.

My last attempt was to create a cube and resize it which works on both computers

// Créer un cube rouge et le redimensionner à 50%
var redCubeLayer = docRef.layers.add();
redCubeLayer.name = "RedCube";
var cubeSize = 100; // Taille du cube en points
var redCube = redCubeLayer.pathItems.rectangle(0, 0, cubeSize, cubeSize);
var redColor = new CMYKColor();
redColor.cyan = 0;
redColor.magenta = 100;
redColor.yellow = 100;
redColor.black = 0;
redCube.filled = true;
redCube.fillColor = redColor;
redCube.stroked = false;
// Redimensionner le cube à 50%
redCube.resize(80, 80, true, false, false, false, 100, Transformation.CENTER);
redraw();

Even with this discovery i have yet to grasp the answer thus why I am turning to the community for enlightenment