In this demo, I show you how to adjust Recent App time out display from 20 seconds, 2 minutes or 1 hour which is what I have it on.
One of the main reasons why I use this function is to get around the "can't use this app whilst using Voice Assistant" as whilst one of these apps is running (which I can launch via Bixby avoiding the crappy accessibility watch dog msg), the app is there when I want to use it and don't have to use Bixby.
As in the demo, I use the Timer app this way all the time, which again, Samsung deems as inaccessible when it's not.