Qt Virtual Keyboard has incorrect Japanese layouts

The Hiragana and Katakana layouts for Japanese show Latin characters instead of Hiragana and Katakana. The documentation also displays the incorrect layouts (see attached screenshot).

Additionally, the Latin-based layouts do not produce any Hiragana, Katakana or Kanji. I assume at least one of these is supposed to be a Romanji input and should therefore suggest correct writing in any of the Japanese system.

See https://www.branah.com/japanese for an example of correct layouts.