When connecting to the team viewer, by default the team viewer hides the wallpaper of the device being accessed, however, after closing the session the device's original wallpaper does not return to normal, the black wallpaper is stuck ;
This has been a headache for me, as users complain that they cannot remove this black wallpaper in any way, even some devices managed by Active Directory also have this problem, the wallpaper defined by GPO does not return after closing the session.