Hey Xenon. That's quite interesting to hear.
Thankfully, it seems like the correction worked, the background is now scaled properly. Thanks! :D

Hey TheMeepingRosa, thanks for pointing out the bug! It's better late than never, and your report helped me realize that I had the scaling for the background inverted (and further multiplied wrong) to the scaling slider!

I have corrected the transformation code, and now the background should correctly scale alongside the character model to fit the screen. I was able to test it on lower resolutions (before fixing, the background was getting bloated way out of proportion which was how I deduced the inverted behavior), so if you could help me confirm the static backgrounds are scaling properly now, it would be greatly appreciated. I have applied the update to all relevant wallpapers, which include Aoi, Rin, Ayumu and Momoka. Just make sure you downloaded the updated version by uninstalling the outdated ones, fully close WallpaperEngine to clear them from your computer, then resubscribing to them.

Let me know if it worked!

Ayyyy nice! Another one to add in the Sub Hub collection. :D
I did however notice an issue on this wallpaper and a few of your previous ones (sorry if it took me this long to report this issue) involving a static background. Above 1080p resolution, the background looks too small. Would it be possible to add a slider to resize the background without resizing the whole wallpaper? Once again, sorry if that took me a while to report that issue, I wanted to do that since I saw the issue months ago.
I reposted the comment for better wording.