I have installed Opera on Kali Linux. However, I have noticed that when I maximise Opera's screen, the three window buttons on the right upper corner are gone. I can't minimise Opera any more and also can't change Opera's screen size.
This is a problem that really only concerns Opera, because with all other applications, I don't have this problem.
My question is: is there a way to get those three buttons back when Opera is maximised?
If not, then I hope that this bug will be fixed soon, because it's really irritating.