When creating a account why are it subscribed to all forums?
This only creates notification spam and makes it hard to find anything you are actual interested in.

I usually open several hundred tabs when using browser and after a while bookmark them all and close them

I have solved the lack of a bookmark all button on Opera mobile with syncing it to my desktop and opening all tabs on it and then bookmarking all of them.

When I tried to do this today Opera only showed the last tabs I visited not the hundred of tabs still open but not visited since the last reboot of the phone.

1. Is this a bug or expected behavior?

2 what is the name of the file that saves all open tabs and where is it located on android?