CUE playlist, media title not updated + no next control

Important Information

• mpv 0.33.1
• macOS 10.15
• Binary Source: https://laboratory.stolendata.net/~djinn/mpv_osx/

Reproduction steps

Loading a CUE sheet into mpv plays all references media files. However, the media title is not updated accordingly. In this case, the first track is named “Sunrise 79” and will be displayed until the last track finishes. The track titles of all other media files are not displayed. Additionally, you cannot click the arrows beside the track title (the buttons which usually control the next/previous track).

Expected behavior

The GUI should display the currently playing media file / chapter. Also, the next and previous buttons should jump to the markers indicated with triangle in the position-bar.

Actual behavior

The title always shows the first media only and the buttons for next / previous are disabled

Log file

N/A

Sample files

Put this in a test.cue file (of course, the media files *.flac must be present).

FILE "01 - Sunrise 79.flac" WAVE
  TRACK 01 AUDIO
    TITLE "Sunrise 79"
    INDEX 01 00:00:00
FILE "02 - Fear of Falling.flac" WAVE
  TRACK 02 AUDIO
    TITLE "Fear of Falling"
    INDEX 01 00:00:00
FILE "03 - Jellyfish.flac" WAVE
  TRACK 03 AUDIO
    TITLE "Jellyfish"
    INDEX 01 00:00:00

Start by loading the provided test.cue with the referenced media files in mpv and observe the displayed title and next/previous controls as tracks change. Trace the code responsible for CUE track metadata and the GUI controls; done means the current track title is shown and the controls navigate between the marked tracks.