@Mlipka Thanks for reply. I notice that this extension gets triggered each time any tab is opened AND closed (even ones which are not loaded & closed by right click) and it appears anytime the tab one is on does some background activity. I haven't looked at the details of the 'special extension' (code) but it appears to be very intrusive. Frankly, i think the reason & nature of this extension & why it can't be disabled should be clearly stated....after all Opera has a better reputation than say Yandex or Edge (or even Chrome).
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