Reordering private pages from 'Site Pages' section does not work

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 6.2.10 EE GA1, 6.2.X EE, 7.0.0 M3
• Fix Version/s: 6.2.2 CE GA3 , 6.2.X EE, 7.0.0 M1
• Component/s: Pages > Page Administration, Sites Administration > Sites
• Labels:
  • QA-TP
  • ee-ts
  • liferay-fixpack-wcm-core-14-6210
• Branch Version/s:
  6.2.x
• Backported to Branch:
  Committed
• Story Points: 5
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/19501

1) Login to Liferay.
2) Click the 'Admin' menu then 'Pages', then 'Private pages'.
3) Create two private pages (a, b) for Liferay site.
4) Drag page b to the first place.
5) Refresh the whole page.

Result:Page order reverts to its initial state.