Hey guys in the opera 68 update thread, there was a discussion about a yellow highlight (here: https://blogs.opera.com/desktop/2020/06/opera-68-0-3618-165-stable-update/).
I know what you're talking about. This has nothing to do with opera, the reason this appears is because some wikipedia results from google are not linked in such a way as to highlight a portion of the wiki page, e.g. https://en.wikipedia.org/wiki/Scientia_potentia_est#:~:text=The phrase "scientia potentia est,Bacon's English or Latin writings.
If you edit the URL to remove the part that is doing the highlight, the article appears as normal: https://en.wikipedia.org/wiki/Scientia_potentia_est