I very much agree with you. Although this week all the Google+ stuff first unavailable in Opera is now visible.
Maybe Google is just playing safe and only launches when they are 100% sure the browser supports the app.
Maybe Google is just playing safe and only launches when they are 100% sure the browser supports the app.
Also, some features have been blocked for a long time for no apparent reason, for example background image on search. It worked from the day one (when you changed the user-agent), there is nothing scientific about it, yet it is still blocked years later.