I created a custom field called Reviewer that allows a list of users to be assigned. It's working fine in the issue screen, but I want the reviewer to appear on the card in the sprint view so we can easily see who the reviewer is for an issue. I tried to add my custom field to the card using the card layout screen in the board settings but it doesn't show up. I can see other fields that I add in the same way, but the reviewer field doesn't display at all.