Language is not inherited except via lyrics?

[szc126]

Website (required)

VocaDB

Describe the bug (required)

Song language is not inherited by derivatives, but lyrics language is inherited.

• https://vocadb.net/S/44504 (Korean, with inherited Chinese lyrics) → https://vocadb.net/S/384621 (Chinese)
• (beta website:) https://beta.vocadb.net/S/150360 (Cantonese, with inherited Japanese lyrics) → https://beta.vocadb.net/S/472568 (Japanese)
• (beta website:) https://beta.vocadb.net/S/472566 (Chinese, with no lyrics) → https://beta.vocadb.net/S/472567 (no language at all)

This seems to have been considered in the past in https://github.com/VocaDB/vocadb/issues/1408#issuecomment-1548694205 (Should we automatically add the language for some derived songs? And if so, what types of derived songs imply unmodified language?).

Although no decision seems to have been made(?), the current behavior of inheriting language via a grandparent entry's lyrics language, rather than a parent entry's song language, seems strange.

To Reproduce (optional)

See above

Expected behavior (optional)

Song language is inherited

Additional context (optional)

Add any other context about the problem here.

Checklist (required)

Fill out the checklist. Use strikethroughs or leave fields empty if you don't know or are unable to check/test.

• [x] Searched VocaDB/vocadb for duplicate issues.
• [x] Tested on the beta site.
• [ ] Tested on different browsers (e.g. Firefox, Chrome, Safari, Edge).
• [ ] Checked in private mode.
• [ ] Cleared browser cache and cookies.
• [ ] Checked the DevTools console.
• [ ] Checked the syslog (mods+ only).

[szc126]

Other confusing behavior that seems related:

https://beta.vocadb.net/S/125516 displays as Cantonese on the page itself (by inheriting information from the parent entry?), but does not show up in a search for Cantonese (language), since language is not set in the entry itself?

(please tell me if I should open a new issue)