Wallpaper constantly turns black

Pretty self explanatory

But buttons work even tho everything is black on wallpaper. To see wallpaper I change it to static image then re apply klwp but in few minutes it goes full black again.

I m using This theme

Using nova launcher as well

Also using latest klwp 3.45b7815

S8 official rom non rooted knox is active

Do your have your system settings set to dark mode?