Thanks for the response and for updating the game.
Unfortunately, now when I talk to Yellow Band he just says "I quit being a newsman because there are traitors among us" and doesn't say anything new.
I've talked to Suzaku in Shishin Base and at home to see if that changes anything, but she just says her normal lines too. Ib the base she just says "I've been banned from the case but we can still talk" and at home she says "Let's get scolded together".
I've also tried resting to change the day, talking at night, and talking many times in a row. I also tried buying things from Yellow Band to see if that changes anything.
Sorry but its the same problem again, the quest is soft locked again.