Paste opera:config#UserPrefs|ChromeIntegrationDragAreaMaximized into the address bar and set the variable to zero to have it catch clicks on the tabs at the very top of the screen.
It is not working for me. I tried with various values (0, -1,..) and it does not seem to have any effect. (Yes, I restarted the browser)
Is this on Windows? I don't think it has the same top border profile on the other OSs. You did click Save, right? Just checking.
Yes. Windows 7. I did click save.
No idea then, sorry. Works fine on the two desktops and a laptop in front of me.