Visualisation bug - bright areas on the web pages

I have problem with Ice Dragon, which do not exist in other browsers (comodo dragon, mozilla). When I scrolling with mouse or just moving the pointer on the web page, some very bright areas appear on the screen

  • Windows 8 64bit
  • Avira antivirus
  • The problem appears after the last changes in icedragon
  • I tried to stop different pluggins, but this didn’t fix the problem

Edited embed-code. – JoWa

I’m having exactly the same issue. I had to eventually roll back to 25. I determined that the brightness glitching is only happening on YouTube and pages that have YouTube videos embedded in them.