I was asked by Onkar Shinde at https://bugs.launchpad.net/ubuntu/+source/libdvdnav/+bug/512576 to comment on this bug. I had problems with playing menu tracks on DVD. Updating libdvdnav to -proposed fixed that to me, and now all DVDs work for me. However, I don't have any DVDs without menu track, so I cannot check this case.
I was asked by Onkar Shinde at https:/ /bugs.launchpad .net/ubuntu/ +source/ libdvdnav/ +bug/512576 to comment on this bug. I had problems with playing menu tracks on DVD. Updating libdvdnav to -proposed fixed that to me, and now all DVDs work for me. However, I don't have any DVDs without menu track, so I cannot check this case.