User blog comment:Dopp/Technical Update: September 13, 2011/@comment-188432-20110919172152/@comment-1656630-20110919180605

Thanks, CzechOut -- while we try to keep things at least minimally functional in Opera, you should know that this is not a browser we officially/fully support (because it can be extra buggy, and its usage numbers are so tiny for us). You should keep a backup browser around for when you run into situations like this.