Hi Richard,
Thanks for your quick response!
The object type is determined correctly as “post” for these request URL’s:
/wp-json/wp/v2/posts?slug=${params.slug}&_fields=id,date,type,title,content,yoast_head_json,_links,_embedded&_embed
I’m using a pretty clean WordPress installation without a lot of plugins. I use ACF, but not on posts.
I just removed the plugin and reinstalled it. I visited some posts on the front end and confirmed they where cached correctly with a default expiry date of 1 yr. Then I clicked “Update” on one of the cached posts and all expiry dates changed to “Flushed”.
Do you have any further ideas I could look at?