So recently I download one animated wallpaper for my Opera browser, and it worked fine for a couple of minutes.
After closing and opening the web browser, there is "no animation" from the wallpaper, it just looks like a normal "static wallpaper".
I have tried unnistalling Opera and deleting any residual information, and then reinstalled it, but it just keeps static, it is not working anymore. Another test that I performed was to download different animated wallpapers, but they are also "stuck", just a normal wallpaper with no animation.
If necessary, the name of the first animated wallpaper that I downloaded is "Old Window".