Page items in the Navigation app group are duplicated when navigating in Product Menu

• Type: Regression Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: Master
• Fix Version/s: 7.0.0 DXP FP33, 7.0.0 DXP FP40, 7.0.0 DXP SP7, 7.0.5 CE GA6, 7.0.X, 7.1.X, Master
• Component/s: Frontend Infrastructure
• Labels:
  • liferay-digital-enterprise-70-sp7
  • liferay-fixpack-de-33-7010
  • liferay-fixpack-de-40-7010
• Branch Version/s:
  7.0.x
• Backported to Branch:
  Committed
• Fix Priority: 4
• Last Working Version:
  Master
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/51560

Steps to reproduce:

1. Navigate to Welcome page
2. Navigate to Content > Web Content
3. View the Navigation app group

Expected result: The Welcome page displays once in the Product Menu
Actual result: The Welcome page displays twice

Reproduced on:
Tomcat 8.0.32 + MySQL 5.7
Portal Master GIT ID: a001c80757877a132bf38f696e6483e12d201cfb