Do I need to bring photocopies of documents to the Immigration office if my visa extension application is under consideration due to Covid?

When returning to the Immigration office after receiving the stamp "Application of stay is under consideration of Immigration Bureau," it seems that generally, you only need to bring your passport. However, some users noted that bringing photocopies of documents is wise as there could be varying requirements each time. It's advised to check if any specific attachments were mentioned in prior communications.