@Rizal78: Is it your Home Screen or Lock Screen Wallpaper that is being affected, or both? Are you using featured/downloaded wallpapers via 'My Wallpapers', or is it an image you have selected from your Gallery? Also, have you activated a Wallpaper Service such as Dynamic Lock Screen? Have you tried changing your wallpaper option to see if the issue persists?
I'm try everything as u said , both lock screen and home screen all black... yes i'm using 'My Wallpaper' and activated Dynamic Lock Screen and try an wallpaper changing option, BUT the prob doesn't solve..... very frust... do i need reset my hp?
Mine does this too on my Note 8. Has only just started doing this in 2021. I too have done the same as above, tried different wallpapers/home screen/lockscreen combinations and they still disappear for no apparent reason??? Can anyone help?