I would like the same.. i have a kid and sometimes i like watching videos/netflix through my headphones while he's watching baby videos through the screen speekers

i am unable to open opera.. when i try it just opens like this but no window opens.. its not on another screen
Ive tried to exit all opera processes (including opera updaters) and start again. restart my pc and download it again and update.. i was hoping i dont have to uninstall it so i dont have to set it all up again as i did not have the sinc on