Audio and subtitle languages not recognized when playing complete Blu-Rays

Important Information

Provide following Information:

• mpv version
  mpv v0.38.0-63-gb364e4a6 Copyright © 2000-2024 mpv/MPlayer/mplayer2 projects
• Platform and Version
  Windows 10 LTSC 21H2
• Source of the mpv binary
  https://github.com/zhongfly/mpv-winbuild/releases
• If known which version of mpv introduced the problem
• GPU model, driver and version
  Intel UHD Graphics 630. 24.20.100.6345. NVIDIA GTX 1050Ti 552.22 CUDA Version: 12.4
• Possible screenshot or video of visual glitches
  Video.webm

Reproduction steps

Trying to play a Blu-Ray folder with all the volumes/discs inside.
mpv --no-config "D:\Mob Psycho 100 S01 1080p USA Blu-ray AVC TrueHD 2.0"
Or dragging the folder into mpv.
This does not happen when playing single volumes/discs.

Expected behavior

mpv should show the audio and subtitle languages. Like:
Audio track x/y [lang] or Subtitle track x/y [lang]

Actual behavior

Once the episode starts playing (after the piracy, FBI, region, etc. warnings) trying to change the audio track or enabling subtitles mpv will show:
Audio track x/y [unknown] or Subtitle track x/y [unknown]

Log file

mpv --no-config "D:\Mob Psycho 100 S01 1080p USA Blu-ray AVC TrueHD 2.0" --log-file=output.txt
output.txt

Sample files

The folder is 64GB so I can't really provide samples

Start by reproducing the issue with the provided mpv command on the Blu-ray folder and inspect the linked output.txt log. Compare playback of the complete Blu-ray folder with a single volume, then verify that audio and subtitle tracks display their languages instead of unknown.