Opera browser by default does not display the full URL in address and search bar. So, a site like http://example.com or https://example.com will simply be shown as example.com
It can be useful to know the complete URL address when a site is accessed.
Here is how to turn this setting on :
Go to Opera settings by either clicking on the “Opera” icon on top left of the browser window or by Ctrl-P.
Click on “Browser” and scroll down to the “User interface” section.
Here, enable the tick next to “Show full URL in combined search and address bar”.
From now on, the entire URL will be visible in Opera address and search bar.
Happy browsing.