@crazyghostrider Not possible at the moment.
this is a great way for a lifetime user of opera to stop, find a new browser, and never return to opera. Most of us chose opera because it let us customize and enable/disable anything we want, it has a built in ad-blocker, vpn and it stops you being tracked. And now you are forced to have to click to pause the video/audio in order for the close 'x' button appears on the tab. And you can't change it. If you're going to be just like all the other browsers there are much better alternatives out there. So it's been a blast, bye.