I had Opera open in two windows: one main and one secondary, on the other monitor. I closed the main window in a hurry, first closing the main window where all my tabs were, then closing the secondary window. Now, when I reopened the browser, the tabs from the secondary window were overwritten, and all the tabs from the main window were gone. This is the second time this has happened, and I'm hoping there's a way to recover them. Could someone help me with this?