Japanese (Kana Kanji) no longer the default input method for Japanese in 3.36.2
Since gnome-initial-setup 3.36.2 landed in Fedora Rawhide, when installing in Japanese, the default input selection is no longer "Japanese (Kana Kanji)" - that is, 日本語(かな漢字)- but just plain "Japanese" (日本語). This is not correct, Kana Kanji should be the default. Kana Kanji sets up an input method you can actually use to input Japanese, which is what all Japanese users are going to want. The choice called "Japanese" simply picks the 'jp' keyboard layout, which is a slight variant of the 'us' keyboard layout for entering Latin characters but doesn't actually let you type Japanese at all.
I guess either 6c36fba5 or ee2b4147 must be the cause of it - both look like plausible suspects on the face of it, they each change logic in ways that could potentially have this as an unintended consequence...