After moving a KBArticle, the Display portlet fails when showing the article

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 6.2.X EE, 7.0.0 M3
• Fix Version/s: 6.2.X EE, 7.0.0 M2
• Component/s: Knowledge Base widget
• Labels:
  • LDN
  • QA-TP
• Branch Version/s:
  6.2.x
• Backported to Branch:
  Committed
• Story Points: 6
• Fix Priority: 3
• Git Pull Request: https://github.com/brianchandotcom/liferay-plugins-ee/pull/9252

Steps to reproduce:

• Go to Admin > Content > Knowledge Base
• Add a new article
• Go to a public page
• Drop the Knowledge Base Display portlet in the page
• Configure the portlet to show the article created in step 2
• Go to Admin > Content > Knowledge Base
• Create a new folder
• Move the article into the folder
• Go to the public page

Expected result: The article is shown correctly; no errors on the log.
Actual result: No navigation shown and article content width gets shrinked; NoSuchFolderException shown in the logs.