Default language doesn't change in site after setting in system setting

• Type: Regression Bug
• Status: Closed
• Resolution: No Longer Reproducible
• Affects Version/s: 7.2.X, Master
• Fix Version/s: None
• Component/s: WCM
• Labels:
  • 7.2-blocker
  • 7.2-pb
  • QA-AUTOMATION
• Fix Priority: 4
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/78627
• QA Test Name:
  • LocalFile.LocalizationWithWebContent#ViewChangedDefaultPortalLanguageViaWebContent
• QA Test Score: 4

Steps to reproduce:

1. Go to Control Panel > Instance Settings > Localization
2. Set the default language to Spanish
3. Go to Content > Web Content
4. Add a Basic Web content, check the default language

Actual result:
The default language doesn't not change, still en-US.

Expected result:
The default language changes to es-ES.