I first noticed this on the UK Artificial Eye Bluray of The Clan 2015. Infuse only shows two PCM 2.0 tracks and no subtitle tracks. This is maybe because Infuse only scans the beginning of the main m2ts file. But Artificial Eye in their infinite wisdom added their logo (a couple of seconds) in front of the main movie - this is still only one m2ts file. When the logo is over other players VLC for example pick up on the additional audio and subtitle streams and make them available to choose from. Unfortunately Infuse sticks to whatever it read at the files beginning so you for example cannot enable subtitles on that disc, nor can you enable the main 5.1 track.
Its no biggie- just to let you know.