I am on Windows 8.1 via tablet NOT a phone. I just thought that maybe the Windows Phone version of Opera Mini may have the feature Im looking for because Im guessing the phones version would be dedicated to a touch screen orientation more than the desktop version.
Anyway, I did manage to track down an Opera Mini phones version and installed it. It must have been out for a decade though and nope, scroll left/right was not present.
I also just tried a beta desktop version and again, not present.
However I have downloaded a feature that will accept all/most extensions available on google chrome store. This was looking good as google has many extensions dedicated for touchscreen gestures but seeing as the feature that I need is already standard on chromium based browsers, there is no need for these type of extensions. So another failure.
I guess you are right. I really dont think Opera can support the "scroll/swipe back". Its a real shame for me as I really personally love everything else about Opera but this absent feature is just way too much of a gap for me.
Looks like I will have to settle on a last resort and put Opera to rest ... but I still have a small ounce of faith that somebody somewhere will read this and reply with good news. I will keep my eyes and ears open.
(SAD FACE)