Random buttons on main menu stop working after finishing a game level on iPad

cocos2d-x C++
1

I have 2 scenes in the game.

  1. MainMenuScene
  2. GameScene

Once level gets seleted on MainMenuScene , GameScene gets loaded for that particular level. However after I return to MainMenuScene from GameScene, random buttons sometimes stop working (do not respond to touch events). This bug happens ONLY on iPad (IOS 9)

I should note that when a particular button is not responding, EventListenerTouchOneByOne events get triggered instead.

While switching from GameScene to MainMenuScene I use replaceScene

Thanks

Code:
Main menu scene:

//Inputs
auto touchListener = EventListenerTouchOneByOne::create();
touchListener->onTouchBegan = CC_CALLBACK_2(MainMenuScene::onTouchBegan, this);
touchListener->onTouchEnded = CC_CALLBACK_2(MainMenuScene::onTouchEnded, this);
touchListener->onTouchMoved = CC_CALLBACK_2(MainMenuScene::onTouchMoved, this);
_eventDispatcher->addEventListenerWithSceneGraphPriority(touchListener, this);

Button touch listener:
m_pButton->addTouchEventListener(CC_CALLBACK_2(MainMenuScene::onButtonClicked, this));

Update:

After debugging what exactly is going wrong, I found out that when touch does not get detected, the getWorldToNodeTransform() that is called in hitTest method of that button returns a different matrix. This further causes the hitTest to return false even if the button is being pressed.

When touch gets detected on the button, getWorldToNodeTransform() returns the following matrix

(float [16]) m = {
  [0] = 0.0000000397364346
  [1] = 0.666666686
  [2] = 0
  [3] = 0
  [4] = -0.666666686
  [5] = 0.0000000397364346
  [6] = 0
  [7] = 0
  [8] = 0
  [9] = -0
  [10] = 0.666666686
  [11] = 0
  [12] = 377.333313
  [13] = -410.666718
  [14] = 0
  [15] = 0.99999994
}

When touch does not get detected on the button, getWorldToNodeTransform() returns the following matrix

(float [16]) m = {
  [0] = 0.0000000458497347
  [1] = 0.769230902
  [2] = 0
  [3] = 0
  [4] = -0.769230902
  [5] = 0.0000000458497347
  [6] = 0
  [7] = 0
  [8] = 0
  [9] = 0
  [10] = 0.769230842
  [11] = 0
  [12] = -684.92334
  [13] = -1810.30786
  [14] = 0
  [15] = 1
}

What would have caused the getWorldToNodeTransform() to return such a matrix ?

2

Can you share your code?

3

Please refer to the code.