1. Whitelist the Recents InterfaceIf you have Disable Other Apps turned on, Fully Kiosk automatically breaks the Recent Tasks button to stop unauthorized app switching.Swipe.
Open the left menu and go to Settings > Kiosk Mode.Look for the App Whitelist setting.Add exactly */*.RecentsActivity to the whitelist.
This forces Fully Kiosk to let the Android system show your running tasks.