I have been using Opera for at least 6 years now (I think) and this is my first time reporting bug. You guys have always been awesome!
The content area of the browser replicates part of the title bar repeatedly after some time within a tab on the same website. For example, I can stay in the same tab and browse imgur or Facebook over a period of at least 10-15 minutes minimum and this will occur. This sometimes causes Opera to not respond but usually I can close the problem tab and continue surfing within the same browser.
Here is a picture of what happens: http://imgur.com/vyVcoct
Please fix, thanks
Some useful info:
Version: 25.0.1614.50 - Opera is up to date
Update stream: Stable
System: Windows 8.1 64-bit (WoW64)
Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/38.0.2125.101 Safari/537.36 OPR/25.0.1614.50