Multiselect Custom Fields should display all items in User Directory

Currently when visiting the “User List” page, multiselect custom user fields only display the last item from the user’s selected items. Looking at the network response for the user directory page, it seems that the response coming from the backend is imposing this limitation. The response only contains a single string value for the custom field instead of an array of values. Can we get a feature improvement to support all values from these fields and display them as a comma separated list like they are on the user card?

Additionally, while the column can be sorted on, there appears to be no way to actually “search” for users who have selected values in their custom fields, even though the field was set as “Searchable”. What does the “searchable” setting do for custom fields if not add the ability to search by that field contents or value in the user directory?