EditorGUILayout.PropertyField drawing bug

Unity Engine
1

Unity version 2020.3.5f1

[System.Serializable]
public class LocalizationData 
{
    /* every next field is serializable */
    public TasksDictionary[] tasksData; 
    public LocalizationItem[] gameItems; 
    public SubCategories[] subCategories;
    public char[] randomLetters;
}

[InitializeOnLoad]
public class LocalizedTextEditor : EditorWindow
{
    public LocalizationData localizationData;
    private bool localizationDataIsReady = true;

    /* ... code */

    private void OnGUI()
    {
        /* ... code */
        if (localizationDataIsReady)
        {
            if (GUILayout.Button("Save data"))
            {
                SaveGameData();
            }
            SerializedObject serializedObject = new SerializedObject(this);
            SerializedProperty serializedProperty = serializedObject.FindProperty("localizationData");
            EditorGUILayout.PropertyField(serializedProperty, true);
            serializedObject.ApplyModifiedProperties();
        }
    }
}

If I open one field, the others do not move down, but remain in their place, overlapping the content of the opened field. Unity 2019 draws it well, but 2020 don’t. I think it is bug. The video shows this more clearly

2

I am experiencing the same thing. Worked fine in 2019. Does not in 2020.