Steps to reproduce the issue

Fresh installed Joomla 5.1 without content, only standard categories present.
Category "Uncategorised" in Content has the id 2, category "Uncategorised" in Contacts has the id 4.
Create a menu item "List Contacts in a Category", click on "Select a Category"

Expected result

The modal opens and the list contains the category "Uncategorised" with id 4

Actual result

The modal opens and the list contains the category "Uncategorised" with id 2, in frontend you get an error: 404 Category not found

System information (as much as possible)

Additional comments