Hello,
I did an update past weekend and some custom theme breaks everything (my fault, latest update was almost one year and a half ago), I was moving around until I sync with the git themes and almost everything was recovered.
This is what I was seeing unusual:
I was expecting to have that image cached
I was checking the forum without success, and finally I noticed that during the theme issue maybe I pushed the configuration button of: “Do not embed media” in Articles configuration and that is not compatible with the cached_starred_articles or cached_images.
Just in case anybody has the same issue.
Kind regards.