Inventory Elastic Search (Morning Glory). Keyword search throw unexpected results when the search only contains numbers and dashes.

Overview: It has been verified that Keyword search when searching on ISSN in Lotus HF2 behaves normal, but apparently something has changed when developing MG.

Precondition:
Start enter an instance record with title: Test ISSN and a contributor with the personal name: Doe, John, 0747-0850. The 0747-0850 is a fake born and death data. This record do not have a resource identifier of type ISSN.

Steps to Reproduce:

1. Log into FOLIO Snapshot as user diku_admin
2. Go to Inventory, select any of the segments (instance, holdings, item)
3. In the Keyword search box, search for: 0747-0088

Expected Results:
I get one record: ABA Journal.

Actual Results:
I get two records: ABA Journal and Test ISSN. In the newly created record Test ISSN, here the personal name is: Doe, John, 0747-0850 - and this should most definitely not be found when searching 0747-0088.

Additional Information:
The expected behavior on ISSN search when using keyword search is:
In the Lotus environment then a search for keyword = 0747-0088 finds only that one instance, where 0747-0088 is included as identifier - https://folio-lotus.dev.folio.org/inventory/view/69640328-788e-43fc-9c3c-af39e243f3b7?query=0747-0088&sort=title
That is correct!

A search using keyword = 0747 finds 0 instances, while this is an exact value which is not present as a title, contributor name, or any identifier in Lotus - https://folio-lotus.dev.folio.org/inventory?query=0747&sort=title
That is also correct and behave as expected!

If I add to the FOLIO Lotus environment an instance as the described Test ISSN title with a contributor with the personal name Doe, John, 0747-0850, then I don't get this record as a hit, when using Keyword search, searching 0747-0088.
Again this is correct behavior.

KG NOTES for viacheslav_kolesnyk 

• It seems like the issue is with Keyword - Identifier searching, in particular ISXN searching. 
  • Works as expected: If you conduct a Keyword search - an ISXN without spaces: 1302900544 then you get the expected results (5-6 instances about Black Panther comic book)  – the ISXN is under the Identifiers accordion.
    • It works as expected when you choose the search option = Identifier (all) 
  • Works as expected: If you conduct a Keyword search - an ISXN with spaces 130 29 06 496 then you get the expected results (5-6 instances about Black Panther comic book) – the ISXN is under the Identifiers accordion.
    • It works as expected when you choose the search option = Identifier (all) 
  • Problem WE NEED to Fix: If you conduct a Keyword search - an ISXN with dashes 978-1302-901-912 then it seems like mod-search interprets the search as a find any across keyword searched fields when it should only return instances that contain 978-1302-901-912 under Identifiers accordion. It should also return at least one Black panther comic book result. 
    • It works as expected when you choose the search option = Identifier (all)  
  • Works as expected: This only seems an issue when searching just numbers with dashes.  If I conduct a keyword search for The Paul McCartney catalog, 1967-2019 then I get expected results https://bugfest-mg.int.aws.folio.org/inventory/view/1b3b1dd6-f0d0-4604-8660-5615954d1a02?query=The%20Paul%20McCartney%20catalog%2C%201967-2019&segment=instances&sort=title&xidtype=6f171ee7-7a0a-4dd4-8959-bd67ec07cc88 
    • • Title contains 1967-2019
      •  It works as expected when you choose the search option = Title (all)
  • Works as expected: If I conduct a keyword search for Chin, Staceyann 1972- then I get the expected results https://bugfest-mg.int.aws.folio.org/inventory?query=Chin%2C%20Staceyann%201972-&segment=instances&sort=title&xidtype=6f171ee7-7a0a-4dd4-8959-bd67ec07cc88
    • Chin, Staceyann 1972- is  a contributor 
    • Problem WE NEED to Fix: It DOES NOT work as expected when you choose the search option = Contributor UIIN-2191