Overview: When using PostgreSQL search we had two search options ISBN, eyereadable and ISBN, normalized. When we did the UI update getting back the drop down menus for the three segments (https://folio-org.atlassian.net/browse/UIIN-1822#icft=UIIN-1822), then ISBN search was re-introduced but this does apparently not support the ISBN and ISBN normalized search (as we used to have - see Bugfest Juniper).
For mod-search following work has been implemented: https://folio-org.atlassian.net/browse/MSEARCH-24#icft=MSEARCH-24 which supports Instance - fields supporting phrase match -ISxN Identifiers

Steps to Reproduce:

1. Log into FOLIO Snapshot as user diku_admin

2. Go to Inventory, select the instance segment

3. View the search options

Expected Results:
I have a search option saying ISBN, which allows me to do search

1. 047144250X normalizes to 9780471442509

2. Any hyphens within the ISBN should be stripped

3. 978-0-471-44250-9 normalizes to 9780471442509

4. Any extra spaces before, internal to, or after the ISBN should be stripped

5. 978 0 471 44250 9 normalizes to 9780471442509

6. Any alpha-numeric qualifying data after the ISBN should be removed

7. 9780471442509 (cloth : alk. paper) normalizes to 9780471442509

Actual Results:
When search using ISBN search option and enter the 'eye-readable' 10 digit number, I get no result - without dashes:

Open

or with dashes:

Open

If I use Identifier (all) I get my results (BUT only in the eyereadable version)

Open

Open

Additional Information:
ISBN, normalized is implemented in the backend as https://folio-org.atlassian.net/browse/MSEARCH-24#icft=MSEARCH-24
URL:
Interested parties: @Magda Zacharska @Michal Kuklis - not sure here if the back end work is not fully done before https://folio-org.atlassian.net/browse/MSEARCH-24#icft=MSEARCH-24 was closed, or this bug has to do with the implementation in the UI.