When I have several pushes from my site received to Chrome on Windows 10, only one (the latest received) is active: the button is working and by clicking the push the URL being opened. Other notifications simply disappear from the list when clicked on.
Such behavior is caused by the default Windows notification center. The thing is that Chrome pushes are now displayed by the Windows notification center (in case of using Windows 10).
Windows notification center leaves only the last notification from a stack of one website active.