When playing DVDs or ISOs I've noticed with LibreELEC that the title menu/dvd menu of the disk often doesn't appear. The menu music/sound or sound will play (once the trailers are skipped or played), and pressing Enter/OK will start the movie. Trying to jump to the title menu always yields a frozen image of the whatever was just playing, with the correct sound for the menu. Selecting a submenu typically loads the menu image and everything is good until a track is played, then its back to moving the invisible cursor on the invisible menu.
This was not a problem I often had with OpenELEC and don't recall having with Kodi prior to moving to OE/LE. I'm running 8.0.2, installed using the manual update feature of the LibreELEC menu.