Some cards remain on screen after they have been deleted

[on6zq]

Fizzy self-hosted, latest docker image.

Issue: some cards remain on screen after they have been deleted.

• Clicking on them causes 404 Not Found.
• CTRL-F5 removes them from screen (as expected without having to clear the cache).

It seems to happen more frequently when there are many cards in a column.

How can this be avoided ?