It seems some players have been experiencing some issues with the melding pot. After a update was released the other day and fixed various bugs. The melding pot has decided to play up now too.
Capcom have released a statement saying the following:
“We have confirmed a bug for some players when using “Melding—Wisp of Mystery” that results in the same Talismans being produced in the exact same order. We are currently looking into the cause and how to fix it, so we will post another notification as soon as we find out more. We apologize for any inconvenience this may have caused our players. We kindly ask for your patience while we look into the matter.”