This change in 'functionality' justs caused me to lose an entire window's worth of tabs. I accidentally closed the wrong window first and went to re-load the other window from the 'Recently closed tabs' menu only to find that it had disappeared. 10 minutes of Googleing later and I find it's moved, but of course the tabs aren't there since its from last session. Even more infuriatingly I've had 'delay loading of background tabs' turned on (this feature is one of the reasons I use Opera), so I can't even go in to history to find out whats been closed. I guess the jokes on me Opera, but I'm not laughing. Time to scrape together what I can from my history, and hope the rest wasn't that important.