Traditional Chinese language uses Simplified Chinese and Japanese font.

When the language is set to Traditional Chinese, the in-game chat uses Simplified Chinese font, while the resource pack selection interface uses Japanese font.

The in-game chat interface in BE1.png uses simplified Chinese font. Unifont_t.png shows the correct traditional Chinese font.

The resource pack selection interface in BE2.png uses Japanese font. Unifont_t2.png shows the correct traditional Chinese font.

The GNU Unifont fonts in image BE1.png provide a Traditional Chinese version. (https://unifoundry.com/pub/unifont/unifont-17.0.04/unifont_t-17.0.04.png) and (https://unifoundry.com/pub/unifont/unifont-17.0.04/font-builds/unifont_t-17.0.04.otf)

The Noto Sans font in image BE2.png provides a Traditional Chinese version. (https://fonts.google.com/noto/specimen/Noto+Sans+TC)