Issue Summary

When a Trello card with custom fields is copied to another board, the custom fields do not appear immediately on the new card. Instead, they may show up only after refreshing the page, and sometimes appear gradually rather than all at once. This issue has been observed by multiple users and affects both custom fields and labels during card copying.

Steps to Reproduce

1. Select a card with custom fields 
2. Copy the card to another board

Expected Results

Custom fields show up on the card immediately

Actual Results

Custom fields show up on the card after refreshes

Workaround

Refreshing the page seems to force the custom fields to show up gradually