Hey Frank Monza,

I want some items to be visible only when the device is locked. I have set the overlay group's visibility to "if locked" and I can't see it in lock screen. However, after unlocking, I'm able to see it for ¼ of a second and it disappears.

Am I doing something wrong? Is it because I'm on Oreo?

This worked for me.

The visibility "If locked" will make an item visible when the device is locked however your lockscreen needs then to be transparent and the BG of the lockscreen needs to be set to the live wallpaper, when you apply a wallpaper in Oreo it will ask you if you want it on the desktop or on both the desktop and the lockscreen, you need to select this last option.