Originally Posted by mikejt2000
totally true, it drives me crazy. there must be a fix
I've been using Trigger
to get around this issue. It costs $3 for the premium version and you can set it up to turn on blocking mode and then disable the notification light. It's good that at least Samsung put that setting in there so apps like Trigger could get to it. It works pretty well. I have mine set up on "timed" triggers to enforce this. Then you can set up home screen shortcuts to enforce it if you want as well.
It sure would have been simpler for Samsung to just keep their app features the same as on the S4, but this at least works.