Issue Summary

When a card (Card B) is added as an attachment to another card (Card A) and then Card B is deleted, Card A continues to display as if it has one attachment. The attachment area on the card back enters an infinite loading loop and never resolves. The orphaned attachment reference cannot be removed by the user.

Steps to Reproduce

1. Create a card and title it "Card A"

1. Create a second card and title it "Card B"

1. Add Card B as an attachment to Card A (via the Attachments section → "Trello" → search/link Card B)

1. Confirm Card A shows 1 attachment (Card B) on both the card front badge and card back

1. Delete Card B (Archive → Delete permanently)

1. Open Card A and observe the attachment section

Expected Results

Card A should display as having no attachments after Card B is deleted. The attachment reference should be automatically cleaned up when the linked card no longer exists.

Actual Results

Card A continues to display an attachment badge (1) on the card front. On the card back, the attachment section shows one item stuck in an infinite loading loop , it never resolves and cannot be removed by the user.

Workaround

There is currently no user-facing workaround.