dswid=tempWindowId for every duplicated tab in Chrome/Firefox

I am using ClientWindowRenderMode.CLIENTWINDOW and a JSF page with <ds:windowId/>, and a ViewAccessScoped action bean which prints its identity whenever its corresponding commandButton is clicked.

If I navigate via that button, or h:link, or <a href>, everything works
as I expect: the dswid is preserved, and the bean has the same identity
within the same browser tab. And if I use middle-click to open a new
tab, each tab gets a new identity (new dswid) and a new instance of the
bean.

The problem happens when I use Chrome's "Duplicate Tab" feature, or Firefox's clone tab feature (drag and drop a tab while holding Ctrl).
Whenever I clone a tab that way, I get (after a redirect) a new tab with
dswid=tempWindowId, and each of these tabs is sharing the same instance
of my ViewAccessScoped bean.

You can see the same problem in the JSF playground, by visiting http://localhost:8080/ds/views/scope/viewaccess/test1.xhtml, cloning the tab twice and observing that dswid=tempWindowId in both clones.

I think duplicated tabs should get their own identities, instead of
sharing "tempWindowId".