I was just on my Opera browser watching something, and when I went out of full screen I found that my screen went mostly white on the browser. I continued, assuming it was a one-off, then it proceeded to happen every 10-20 minutes or so when I'd go into full screen and then back. This is right after the new update today on 25/04/25, on a Windows 11 HP Pavillion Laptop 14-dv0xxx. I have attached an example of what it looked like below:
