AEM Editable Template Folders Missing

A quick hint, mostly as a reminder for myself for the next time it happens. When trying to access editable templates through the UI; Tools->General->Templates or via the URL <instance host>/libs/wcm/core/content/sites/templates.html/conf, I’ve run into occasional issues where not all template folders are displayed. After deugging, I ultimately found that this runs the following query:

SELECT * FROM [cq:Page] AS p WHERE p.[jcr:path] LIKE '/conf/%/settings/wcm/templates' ORDER BY [jcr:path]

That should use the cqPageLucene index, and simply running a re-index will fix the issue.