i made a new topic about dat, they've closed it with reason "duplicated" of this topic and since 2014 this topic started we still have no this feature. u must be so stupid to delete so awesome thing from ur product.
Posts made by eros1ove
RE: Just bring back an option for tab stacking!Suggestions and feature requests
Tabs stacking that was in opera 11Suggestions and feature requests
Hello! It would be great if 'tabs stacking' function will be returned. It was amazing feature. And there is no extension like dat.
Video that shows how it was working