Not sure if anyone has observed that. After I start the Opera browser and try to maximize browser window, it actually doesn't get maximized by height, It only gets maximized by width. It doesn't matter whether I use double click on upper edge or maximizing button. Sometimes, when I try couple of times or do something here and there and try again, it does get maximized properly, but I am not able to find any rule. Normally it just get maximized by width.
Many thanks in advance for help. Cheers,
PS. Attached screnshot of the window as it loos like after 'maximizing'.