Getting rid of the tab-stacking feature is a deal-breaker for me. This is unacceptable. The only reason that I still use Opera is because of this feature. Opera has been on a mission to get rid of all of their most useful features for years now. First they get rid of all of the cool MyOpera features, and now this and a bunch of other unwanted changes since version 15. Great job making your browser exactly like everyone else's, Opera. I am going back to Firefox, or switching to Chrome--what is the difference between this browser and any other one now? I fucking hate this browser/company now!!!!