@hyperspaced - I have the same issue - only in reverse. I am using a windows 10 laptop. Opera stays on top - I cannot get the other apps - ANY of them - to take over the screen... I always have to minimize Opera if i want to see the other open apps. Perhaps we could compare settings - I also use Opera on a mac - windows 7 - iOS for both iPad and iPhone (but later removed them as they were severely limited in functions (no VPN either) and run VERY slow)... The windows 10 machine is the only one that is having the problem.