Indeed, if Opera can do this modification automatically, it would be most convenient for all users. There are too many technical things after all.
Yes, the question is how can we make them know about this issue, and that you are not alone in that?
I guess they are not checking every topic of this forum, and even if they found it, still they will consider it as not important/waste of time probably.
Same in my case, I found that Acrobat opens wrong the document, but it's saved as a whole and I can open in correctly in other pdf viewers.