Measure splits my chord

import QtQuick 2.0
import MuseScore 3.0
import QtQuick.Controls 1.0
import QtQuick.Layouts 1.0

MuseScore {
menuPath: "Plugins.pluginName"
description: "Description goes here"
version: "1.0"
height: 400
width: 400
pluginType: "dialog"

// Function to get a random denominator
function getRandDenominator() {
    var denominators = [1, 2, 4, 8, 16, 32];
    var randomIndex = Math.floor(Math.random() * denominators.length);
    return denominators[randomIndex];
}

// Function to display elements based on user input
function display() {
    var elementObj = [];
    var cursor = curScore.newCursor();
    cursor.rewind(2);
    var endTick = cursor.tick;
    cursor.rewind(1);

    // Clone elements from the score
    while (cursor.tick < endTick) {
        elementObj.push({
            element: cursor.element.clone()
        });
        cursor.next();
    }

    // Get the user input for the number of repetitions
    var count = parseInt(inputField.text);

    // Create a new array of elements based on user input
    var newElements = [];
    for (var i = 0; i < count; i++) {
        newElements.push(elementObj[i % elementObj.length].element);
    }

    // Add new elements with random durations to the score
    for (var i = 0; i < newElements.length; i++) {
        curScore.startCmd();
        cursor.setDuration(1, getRandDenominator());



        if (newElements[i].type === 93) {
           if (newElements[i].notes.length === 1) {
               cursor.addNote(newElements[i].notes[0].pitch);
           } else {
               for (var j = 0; j < newElements[i].notes.length; j++) {
                    if(j === 0) {
                        cursor.addNote(newElements[i].notes[j].pitch);
                    }else{
                         curScore.startCmd();
                         cursor.addNote(newElements[i].notes[j].pitch, true);
                           curScore.endCmd();
                 }

               }
           }
        } else {
            cursor.addRest();
        }

        curScore.endCmd();
    }
}

// Main content
ColumnLayout {
    anchors.fill: parent

    TextField {
        Layout.fillWidth: true
        placeholderText: "Number of repetitions"
        id: inputField
    }

    Button {
        text: "Submit"
        onClicked: {
            display()
        }
    }
}

}