Here owned hardware is listed along with the number of associated submissions. In the past, clicking on the number returned a list of those submission but now that query always returns a blank list, no matter how many submissions actually exist for those criteria:
A useful way to find certain submissions is another user's Hardware Library, e.g. https://hwbot.org/user/bilko/#Hardware_Library:
Here owned hardware is listed along with the number of associated submissions. In the past, clicking on the number returned a list of those submission but now that query always returns a blank list, no matter how many submissions actually exist for those criteria: