IsPointerOverGameObject() is true for wrong object sometimes

Questions & Answers
1

I have some code for a tooltip UI object that I want trigger after about a half a second.
It’s working except that I have a bug, caused by IsPointerOverGameObject(), where sometimes the tooltip will pop up over the wrong UI object. This only happens if you move the cursor from one object to the next at a specific speed; otherwise it works perfectly. But it happens way more often than I would like.

The code looks like this:

    public void OnPointerEnter(PointerEventData eventData)
    {
        StartCoroutine(WaitToPop());
        Debug.Log(name+ " OnPointerEnter");

    }

    public void OnPointerExit(PointerEventData eventData)
    {
        Debug.Log(name + " OnPointerExit");
        toolTipPanel.SetActive(false);
    }

    IEnumerator WaitToPop()
    {
        yield return waitTime;
        if (EventSystem.current.IsPointerOverGameObject())
        {
            Debug.Log(name + " IsPointerOverGameObject()");

            panelText.text = tooltipText;
            toolTipPanel.transform.position = tooltipPosition;
            toolTipPanel.SetActive(true);

        }
    }

The console looks like this:
ScreenShot of Debug.Log

And here is a gif of the offending code in action:
115521-hoveroverbug.gif

If necessary, I can upload a simple version of the project somewhere.

2

I got it working correctly by using a bool instead of IsPointerOverGameObject() so fixed code reads:

    public void OnPointerEnter(PointerEventData eventData)
    {
        StartCoroutine(WaitToPop());
        Debug.Log(name+ " OnPointerEnter");
        hasExited = false;

    }

    public void OnPointerExit(PointerEventData eventData)
    {
        Debug.Log(name + " OnPointerExit");
        toolTipPanel.SetActive(false);
        hasExited = true;


    }

    IEnumerator WaitToPop()
    {
        yield return waitTime;
        if (!hasExited)
        {
            Debug.Log(name + " IsPointerOverGameObject()");

            panelText.text = tooltipText;
            toolTipPanel.transform.position = tooltipPosition;
            toolTipPanel.SetActive(true);

        }
    }

but I still have no idea why IsPointerOverGameObject() is weird like that