After the last update, the Full Immersive mode for selected apps no longer hides the navigation bar (used to work fine before the update, now only the status bar is hidden in Full Immersive mode) - I had to add the selected apps to the Nav option to hide the navigation bar as well.
After the last update, the Full Immersive mode for selected apps no longer hides the navigation bar (used to work fine before the update, now only the status bar is hidden in Full Immersive mode) - I had to add the selected apps to the Nav option to hide the navigation bar as well.