I just found this comment:
I solved the issue by removing deepin-anything-arch and installing deepin-anything-dkms, deepin-kwin,and reinstalled deepin-dock. I have a feeling that deepin-anything-arch is the problem with most of these bugs.
And sure enough, doing
yay -S deepin-anything-dkms deepin-kwin deepin-dock
worked for me.
You will need to confirm the removal of the deepin-anything-arch.
hello, in my opinion it is: deepin-qt5integration which made the graphics bug
I had the correct deepin qt5integration version installed, and still had this bug. Following the steps above, I was able to use the wallpaper changer.
you are right for the wallpapers