@Lando242 - Probably because Opera seem to not want to listen to their users. Its easy to find media contacts and business enquiry contacts, but support or dev contact is almost impossible to find. I get the impression Opera simply don't want to hear about issues users have.
Like many other people affected by this bug, I have found the no-sandbox parameter works but I am not prepared to leave my system vulnerable without using the sandbox. It is now near the end of February 2015 and the bug STILL remains. Opera need to get their act together or their market share will drop below that of Konquerer! I shall just stick with Firefox right now, not happy at all.