Cannot access Search widget after upgrade on DB2

• Type: Regression Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.2.X, Master
• Fix Version/s: 7.2.X, 7.3.0 CE GA1, 7.3.1 CE GA2, 7.3.10 DXP GA1, Master
• Component/s: Core Infrastructure > Database Access, Database Upgrade Framework
• Labels:
  • 7.2-blocker
  • QA-AUTOMATION
  • QA-FP
• Fix Priority: 4
• Last Working Version:
  7.2.10 DXP FP3
• Databases:
  DB2 11.1
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/81783
• QA Test Name:
  • LocalFile.PortalSmokeUpgrade#ViewPortalSmokeArchive7110
• QA Test Score: 5

Steps to Reproduce:

1. Import the attached database into DB2 (7.1.10 database)
2. Run upgrade to master/7.2.x (DXP profile)
3. Start Portal
4. Login
5. Search for "Web Content" in the search bar on the main site page

Expected Results:
Search returns in Search Portlet

Actual Result:
Search Portlet shows as missing.

Errors repeatedly thrown in console due to what looks like a truncated property:

ERROR [http-nio-8080-exec-10][UnicodeProperties:119] Invalid property on line sitemap-includ
ERROR [http-nio-8080-exec-10][UnicodeProperties:119] Invalid property on line sitemap-includ

Reproduced on upgrade from 7.1.10.
Not Reproducible on upgrade from 7.2.10

Full CI log of the test that caught this issue: https://testray.liferay.com/reports/production/logs/test-1-1/1575633850299/test-portal-upstream(master)/867/functional-tomcat90-db2111-jdk8/66/0/jenkins-console.txt.gz