Child pages with double-escaped friendly URLs don't work

• Type: Regression Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.0.X, 7.1.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 FP19, 7.1.10.5 SP5, 7.1.X, 7.2.10 DXP FP7, 7.2.X, 7.3.3 CE GA4, 7.3.10 DXP GA1, Master
• Component/s: Page Templates
• Labels:
  • QA-FP
  • backend_test
  • ee-ts
  • liferay-dxp-70-sp14
  • liferay-dxp-71-sp5
  • liferay-fixpack-de-93-7010
  • liferay-fixpack-dxp-19-7110
  • liferay-fixpack-dxp-7-7210
• Branch Version/s:
  7.2.x, 7.1.x, 7.0.x
• Backported to Branch:
  Committed
• Fix Priority: 4
• Git Pull Request: https://github.com/dacousalr/liferay-portal/pull/226

Steps to reproduce:

1. Start a 7.0 bundle with de-84 (de-85 introduced LPS-97922 which prevents double-escaped friendly urls for this scenario)
2. Create a page
3. Use any existing page template to create a child page to it with a diacritic letter in its title (like 'á'),
4. Open the page and see that the friendly URL is double-escaped, but it opens successfully
5. Install de-85 (or any later fix pack)
6. Open the child page

Actual behaviour: The page can't be opened, error is displayed on the UI

Expected behaviour: The page is displayed