I am having the same issue. The drop-down appeared today for the first time and now, every time I start the browser and open ANY website (I tested it with literally anything I could come up with), the dropdown appears, telling me that an extension requires additional updates. I uninstalled every extension and reinstalled the browser. Nothing changed. I used the " --show-component-extension-options" thing but it does not show me ANY other extension in my list at all. The only thing in my list is the Opera Webblocker.