Cannot change site page variation in staging bar

• Type: Regression Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.0.X, 7.2.X, Master
• Fix Version/s: 7.0.0 DXP FP93, 7.0.10.14 DXP SP14, 7.0.X, 7.1.10 DXP FP18, 7.1.X, 7.2.10 DXP FP6, 7.2.X, 7.3.3 CE GA4, 7.3.10 DXP GA1, Master
• Component/s: Staging
• Labels:
  • 7.0-blocker
  • 7.2-blocker
  • QA-AUTOMATION
  • QA-FP
  • liferay-fixpack-de-93-7010
  • liferay-fixpack-dxp-18-7110
  • liferay-fixpack-dxp-6-7210
  • pt-app-security-review
• Branch Version/s:
  7.2.x, 7.1.x, 7.0.x
• Backported to Branch:
  Committed
• Story Points: 5
• Fix Priority: 5
• Git Pull Request: https://github.com/hhuijser/liferay-portal/pull/4369
• QA Test Name:
  • LocalFile.PGStaging#PublishWCWithPagesVariationViaRemoteStaging
  • LocalFile.StagingUsecaseWithRoles#StagingDemoLocalLive3
  • LocalFile.StagingUsecaseWithVersioning#ChangeSitePageVariationInPagesAdmin
  • LocalFile.StagingUsecaseWithVersioning#DeleteChildPageFromVariationWhereNotEnabled
  • LocalFile.StagingUsecaseWithVersioning#EnableAndDeleteSitePageVariationPage
  • LocalFile.StagingUsecaseWithVersioning#StagingMergeSitePagesVariation1
  • LocalFile.StagingUsecaseWithVersioning#StagingMergeSitePagesVariation2
  • LocalFile.StagingUsecaseWithVersioning#StagingSiteVariationIncompletePage
• QA Test Score: 32

Reproduction steps:

1. Activate staging with page versioning on a new site with a page
2. Go to the page an add a new site page version
3. Do some modification on the new site page version
4. Try to change between variations

Expected: The change of site page variation should be successful.

Actual: Site page variation doesn't change with JS error dispalys in browser's console:

Uncaught SyntaxError: Unexpected end of input