Having cleared all caches and leaving the site to its own devices, I've come back some hours later (after the scheduled cron task has run) to observe that Author submission is visible in Teasers where it has been deliberately hidden, and Teaser headings do not link to their respective nodes. This appears to only affect the default Page content type, not custom content types.
On examination of the HTML delivered to the browser, it's obvious that node.html.twig is being ignored in some cases. The *article* wrapper unique to that template is missing. The template conditional statement % if display_submitted % hasn't been parsed, revealing the authoring and post info etc.
Has anyone else observed this?
I've now set the internal page cache to *no caching* to see if it makes a difference.
