In Chrome and almost every other Chromium based browser, there is an option to make some website showing like a application (web app) on desktop mode and even run them from the system with a shortcut icon.
These PWA (Progressive Web Apps) idea is to load without browser user interface elements, but i dont find that option in Opera desktop? Even Opera itself as a company promote PWA on it's mobile side but why they dosnt have support in the desktop?
And i dont mean that they not load in Opera, ofcourse they load but i dont want see any of the bars or other elements from the browser when running them (idea of pwa). So just bring that feature back from the Chromium source to Opera too.