I have this same problem and tried turning off the Hardware Acceleration, and it sure solves the issue BUT then I realized the Facebook Messenger stops working
Also it seems that the browser works a little slower.
I find it so weird that there is no bug solution yet, as I guess thousands of people might be having the same issues!
So I am using Google Maps LITE for now, so I can use Facebook Messenger.
PS: It's my first time commenting here. So I would take the chance to praise the work of Opera that I use since the version 9 and loving it!