In the shiritori channel, the kaochan bot in the discord serverhas problems with furigana. I've encountered it multiple times now, and it seems to have to do with (kata)kana + kanji combinations (see image), where the bot only shows the 'furigana' for the katakana, while the kanji gets left out.
I'll put this in the to-do list, but I cannot say when I'll be able to get to it. I really appreciate the screenshot, though - should make it much easier to track down.
I'm also talking to you in discord, but just for anyone else reading this - the bug was fixed, but to a restart-loop issue, I ran out of "tokens" used to talk to discord's service, and it'll reset in 16-18 hours from posting of this message :(