Were you able to try the steps provided?
Go to Display then Fill screen apps
There, you can select/deselect the apps
Hi, i was having the same problem and changed my wallpaper to a darker one and it came back
Go to settings. ..Display... .status bar
Same thing happened to me.
All I did was go into the Good Lock 2018 app (found in the Samsung app store) and disable and reenabled the customized notification bar.
Thanks! That was the issue with mine.
would you kindly detail, which menu on good lock, i try to look but cannot find it