[fandangos]

not sure what you mean. Mount it and play the disc via the context menu. Or browse to the index.bdmv file and play that

Try your suggestion and only a few BD J i tested are working.

What a shame! I think I should remove that crappy code immediately.

I'm not a coder like you ACE but could you explain what is going on?
I had in mind libbluray would do all the work reading the menus, that's not the case then?

Different players interact with libbluray differently? So one player could have more compatibility than others using the same libbluray version?
For further improvements we need updates on libbluray?

And also even if libbluray updates adding the requirement for UHD disks that doesn't mean it would work with KODI?