@leocg
Hi, I have just recovered Opera browser fully, returned to default.
I have figured out that in recent versions, no such add-on is necessary anymore. Wikipedia pop-ups work as in any other browser, so I eliminated all of them, they don't have any purpose anymore. Maybe they have some advanced options, but at the moment I don't need them. I had a need to install them while ago, in the time when Opera didn't have this feature built-in.
