Yeah, now I clearly see what you mean. I haven't experienced that problem, so I have now idea why you get it. Your specs didn't seem to be bad, perhaps it's a problem with your graphic driver? Have you experienced problems in other applications and overall performance, or it is only Opera?
Everything works fine and this issue is just in Chromium-based browsers. Old Opera and Firefox work perfectly!
Thanks. I figured that out though and was hoping for toggle function like full screen toggle. I understand if they want to keep it this way but wouldn't hurt to have another shortcut for that.