I just updated to the new version of Opera (45.0.2552.635 (PGO)) today and unfortunately the biggest complain I have is the fact that I cannot download any kind of attachment from inside GMail.
Tried with other browsers (IE, Edge, Chrome) all work as it's supposed.
I also tried other email services (Outlook, GMX) everything is fine.

Only on GMail.

Any ideas if there's a workaround ?

Thanks.