Translated name of tags is always null

[Yochyo]

• version:
• node version: 14.11.0
• npm (or yarn) version: 1.22.10

Do you want to request a feature or report a bug?: Bug?

What is the current behavior?:
When calling illustDetail() or userIllusts(), the "translated_name" of a tag is ALWAYS null. I must either be stupid or it doesn't work anymore.

What is the expected behavior?:
Most tags have a translated name. PxView, which is using pixiv-app-api, displays translated tags normally. So it did work at some point.