Dear Maintainer, playing a dvd image with 7 tracks (0-3 are episodes, 4-6 are just the usual fillers) via mpv -dvd-image <dvdimage> dvd:// plays the second track, not the first. i am not quite sure what exactly to expect (just playing or presenting the dvd menu or something entirely different), but i think it shouldn't skip the first track.
From the manpage: So this is actually a feature. E.g. if you are playing a movie DVD, it plays the movie track by default, which is IMO a good thing, but it kinda falls apart in your case, since longest track doesn't really mean "most important". (I also just noticed that this is not mentioned in the 0.4.0 release notes, gonna fix that now). I'm gonna see if upstream wants to change this back to "0" or something like that. Cheers