Multitasking : How do I maintain the opera browser tabs keep active when switching applications
just do the following:


go to settings.
then go inside developer options
then go to the app section. There you find option saying "don't keep activities". Put it OFF...thats it.
now browse opera mini on phone...it will sort out your problem.


Now you can tab between multiple tasks – and no need to worry about anything. It works for me too. I have a KitKat version.