QSystemTrayIcon problems in Windows 10

Using QSystemTrayIcon in my Qt app to show messages in the system tray, using the method:
void showMessage(const QString &title;, const QString &msg;, const QIcon &icon;, int msecs = 10000);
In Windows 10, current balloon keeps visible with old text the default time (10"), and then another balloon is displayed with the new text.

Steps to reproduce:

1. Execute Qt provided example "System tray Icon Example"
2. Click on show Message button
3. Quickly change message content and again click show message. You may have to do this steps multiple times (3-4 times) to reproduce the issue.

Actual result: Updated Ballon should appear instantly, but old ballon keeps visible for timeout period. Then abruptly, new ballon appears.

As per customer, It is working fine in Windows 7. In Windows 7, calling showMessage with an existing visible balloon, existing balloon text is updated with the new text.