Simplified Chinese subs display issue

Important Information

Provide following Information:

• mpv 20230423-git-c7a8e71
• Windows 10
• Source of the mpv binary
• Don't know
• Possible screenshot or video of visual glitches

If you're not using git master or the latest release, update.
Releases are listed here: https://github.com/mpv-player/mpv/releases

Reproduction steps

Just play any video with build-in srt subs in Traditional Chinese and Simplified Chinese

Expected behavior

Both Chinese characters display correctly

Actual behavior

Traditional Chinese displays correctly but Simplified Chinese some characters have fallback to another font

Log file

https://zerobin.net/?6122eea95c23f10c#DsgCU2FwdtgGKkqZ9dxCjkZDI5Hv0lNDyl3b/4sFgNY=

The issue will be closed for ignoring the issue template.

Sample files

Sample files needed to reproduce this issue can be uploaded to https://0x0.st/
or similar sites. (Only needed if the issue cannot be reproduced without it.)
Do not use garbage like "cloud storage", especially not Google Drive.

Start by reproducing the subtitle rendering on Windows 10 with the reported mpv build, then inspect the linked screenshot and log for the font-selection details. Compare Traditional and Simplified Chinese subtitles; the issue is done when both display correctly without unintended fallback characters.