Adding synonym sets removes search results for fully localized entities when searching with inexact queries

• Type: Bug
• Status: Verified
• Resolution: Unresolved
• Affects Version/s: 7.2.X, Master
• Fix Version/s: None
• Component/s: Search Tuning > Synonyms
• Labels:
  • 7.2-sp1-known-issues
  • 7.3-known-issues
  • liferay-ga4-ce-733
  • liferay-ga5-ce-734
  • liferay-ga6-ce-735
  • liferay-ga7-ce-736
  • liferay-ga8-ce-737
  • reviewed-by-pm
• Epic/Theme:
  • Search_Tech_Debt
• Fix Priority: 4

Steps to reproduce:

1. Create 3 Web Content Articles titled: articles, article1, articlez
2. On the home page, search for article
   Observed behavior: articles, article1, and articlez appear in the search results
3. Add a new Search Tuning > Synonym Set: article, journal
4. On the home page, search for article, then search for journal
   Expected result: articles, article1, and articlez appear in both search results
   Actual result: Only articles appears in both search results

Note: This was reproducible using Categories as well which is another fully localized entity. Not reproducible with Documents and Media since that asset type is not currently working with synonyms (LPS-98063).

Reproduced on:
Portal master-private Git SHA: 284c8029e18b4f9dbb078be1393ce1b31d7f3533
Portal 7.2.x-private Git SHA: 051b82b85e09f3392458ced4535caf3c557e3ebb