The template provider is not honoring use nested pages hierarchy as a template when configured to "Save and edit"

I'm reporting this as a bug, but please note before fixing it that it can also be viewed as a workaround XWIKI-17985.

Steps to reproduce :

• Follow the instructions in https://extensions.xwiki.org/xwiki/bin/view/Extension/Administration%20Application#HUsingahierarchyofNestedPagesastemplate as how to set-up a nested pages template : create the following pages :
  • PageA.WebHome
  • PageA.AnotherPage.WebHome
  • PageA.TemplateProvider
• PageA.TemplateProvider is a template provider using PageA.WebHome
• Edit the configuration of PageA.TemplateProvider to set the "Action on create" property to "Save and Edit"
• Create a new page (let's say PageB.WebHome) from this template provider

Expected :
Nested pages templating applies, thus we should see PageB.WebHome, PageB.AnotherPage.WebHome and PageB.TemplateProvider appear

Actual : only PageB.WebHome is created