QML Singleton Parse error - qt

Question

I have a QML singleton file which I use it for saving user variables to be used in the application.
I use the same file for storing variables like #define in C++.
The issue is if I add new parameters and compile and run the app, the values that I read from the old variables from the singleton file reads junk values until I add a console.log().
This happens every single time I add new variables to the file.
Is this a known bug? I am using Qt 5.8 on a Yocto build.
Edit: Added a minimal project files to reproduce the error. I tried this in Ubuntu 16 as well.
main.qml
import QtQuick 2.7
import QtQuick.Controls 2.0
import QtQuick.Layouts 1.0
ApplicationWindow {
visible: true
width: 640
height: 480
title: qsTr("Test")
Scene
{
width: parent.width
height: parent.height
anchors.centerIn: parent
}
}
Style.qml
pragma Singleton
import QtQuick 2.0
QtObject
{
property color green: "#558B2F"
property color red: "#DD2C00"
property color black: "black"
property int dialogPopupDuaration: 100
property int dialogTimeoutValue : 1500
property int splashTimeout: 5000
property int rotation: 180
//Dialog Types
property int dialogInfo: 0
property int dialogProcessing: 1
property int dialogSuccess: 2
property int dialogFailure: 3
//Settings
property int manualOffset: 0
property int calibrationTimeout: 1
property bool isUnitMM: true
property bool isBrightnessHigh: false
property bool isDMPInit: false
property int batteryThreshold: 33
property int batterWarningOffset: 3
//Uncomment the below lines and run
//the app will no longer print the qW
//until i console.log() in main.qml
// readonly property int boneS: 1
// readonly property int boneN: 0
// property int boneType: boneS
// property int boneTN: boneN
// property int boneTP: boneN
//Default quaternion values for the 3D obj
//to face towards the screen
property real qX: 0.0
property real qY: -1.0
property real qZ: 0.0
property real qW: -0.5
property real tolerance: 0.02
//IMU requires 30s from boot to settle down
//so if user tries to calibrate it before that
//use this bool to show warning
property bool isThirtySecElapsed: false
readonly property string appVersion: "v1.0.2"
}
Scene.qml
import QtQuick 2.0
import "."
Rectangle
{
id: scene
anchors.fill: parent
width: parent.width * 0.5
height: width
color: "grey"
Text
{
text: Style.qW
anchors.centerIn: parent
font.bold: true
font.pointSize: 20
fontSizeMode: Text.Fit
color: "white"
}
Component.onCompleted:
{
//console.log(Style.qW)
}
}
qmldir
singleton Style 1.0 Style.qml