Issue Summary

The customer is loading a board using a URL with a saved filter. Example: https://trello.com/b/XXXXXX/prime?filter=member:support_tester

The board has many mirrored cards. from many other boards. When the board loads, not all mirrored cards appear. On subsequent loads in the same tab, or after a refresh, the rest of the mirrored cards appear as expected.

Steps to Reproduce

The steps to reproduce the problem aren't super clear. We managed to create the environment where the problem happened. We can invite you to the board if needed.

To create this environment:

• Create four boards: a primary board, and three feeder boards
• Create 20 cards on each feeder board
• Create an automation on each feeder board that reads, "
  when the red label is added to a card, create a unique mirror card with title "{cardlink}" in list "wherethecardsgo" on board "prime"
   
• Add the red label and assign yourself as a member of 5 cards at random on each feeder board
  • • Open the primary board
    • Select the "Cards assigned to me" filter
    • Copy the URL
    • Open a new tab and paste the URL that includes the filter parameter

Expected Results

All mirrored cards are shown on the board.

Actual Results

Not all cards show up.

Workaround

Refresh the page to have the mirrored cards displayed on the board after accessing an URL with a member filter.