Staging with page versioning - Changes to Content Pages are applied to all page variations instead of only the selected variation

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.1.X, Master
• Fix Version/s: 7.1.10 DXP FP18, 7.1.10.5 SP5, 7.1.X, 7.2.10 DXP FP5, 7.2.10.2 DXP SP2, 7.2.X, 7.3.0 CE GA1, 7.3.10 DXP GA1, Master
• Component/s: ~[Archived] WCM
• Labels:
  • 7.1-should
  • QA-V
  • ee-ts
  • liferay-dxp-71-sp5
  • liferay-dxp-72-sp2
  • liferay-fixpack-dxp-18-7110
  • liferay-fixpack-dxp-5-7210
  • staging
• Branch Version/s:
  7.2.x, 7.1.x
• Backported to Branch:
  Committed
• Story Points: 0.25
• Fix Priority: 3
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/81916
• QA Test Name:
  • CONTENT_PAGE_STAGING_08_-_Content_page_displays_correctly_after_page_versioning
  • CONTENT_PAGE_STAGING_09_-_Content_page_layout_survives_page_versioning
  • CONTENT_PAGE_STAGING_10_-_Content_page_configuration_survives_page_versioning
  • CONTENT_PAGE_STAGING_11_-_Content_page_mapped_widgets_survive_page_versioning_and_display_correctly
  • CONTENT_PAGE_STAGING_12_-_Content_page_sections_survive_page_versioning__and_display_correctly
  • CONTENT_PAGE_STAGING_13_-_Content_page_with_widgets_in_layout_survive_page_versioning_and_displays_correctly
  • CONTENT_PAGE_STAGING_14_-_Content_page_localization_survive_page_versioning
• QA Test Score: 35

This only happens with content pages. I tested with widget pages and changes to one particular page variation stay within that page variation. I've attached a video of this: 2018-06-21-1721-22.mp4

Steps to reproduce:

1. Activate staging with page versioning enabled
2. Create a content page
3. Add another page variation of the content page
4. Make a change to the main variation version of the page

Expected result:
The change to the main variation should only apply to the main variation. The second page variation should still look like when the page was first created.

Actual result:
The change is applied to both variations.