I have seen this same thing with only one disc (Matrix Revolutions, Special Features). The problem is that on this disc DVDFab (both v12 and v13) cannot see Title0. No idea why. It is there and it plays fine, but DVDFab just cannot see it. Actually, I am beginning to think this may be more common than we think, but we do not notice it because Title0 on a commercial disc is often just garbage. Or maybe Commercial discs just do not usually have a Title0? I do not know, but I always see them on my home-recorded DVDs and Blu-rays.
On your disc I do not even see a Title1, but I do see something strange that was also on my disc - those 2(1), 2(2), 2(3) titles - that is not usual, and I have only noticed that on the one disc where the first title could not be seen. If you play the disc with PlayerFab it will tell you what the title name is.
I reported that and got completely ignored by them.
I hope you get a better response.