Makes sense; if Z was the last to have been loaded in the tab when that tab was closed, why do you expect otherwise? After all, the browser feature is called "Recently Closed Tabs", not "Recently Visited Sites" ; however, a closed-tab's history isn't being deleted (it's saved in session data); re-open the tab with site Z on it, then use the back button once to revisit site Y (or twice for site X, etc.) ...