When I open a tab, the first page that is displayed disappears when I go to another page in that tab. The back arrow doesn't become active until I go to a third page. I can go back to the second page, but not the first one. Example: I open a new tab using the + button. I type a keyword in the search toolbar and perform the search. If I select one of the results of the search, I can't go back to the original list of results.