We have many bib records with no items available (Lost, Missing, etc). Unfortunately these still show up in "similar item" suggestions in the catalog.

Currently if you click on one it takes you to a 404 page.

Once on the 404 page, you can't simply click back to go to where you were, since that seems to take you to a page that forwards you back to the 404. The only way to go back is if you hold down the back button to go back 2 pages (which many users will not know.)

Example of the issue:
https://youtu.be/2TrY1TjndxU

Since it is impossible to hide these unavailable items from suggestions, can we have a page that says something like "we're sorry, all items are currently missing or unavailable"?