On a fresh install of the varbase distribution (8.x-7.2) I created three heroslider content entities, each with an embedded image.
The heroslider images were not displayed to an anonymous user, although there was a blank space where they should be.
The images were displayed to a logged in user who had a role of "Content admin" or more privileged.
Turning javascript aggregation OFF allows the images to be displayed to anonymous users.
The problem appears to be that the aggregated javascript causes all images in the heroslider (or really slick) display to be marked as "hidden"
Needs work
9.0
Code
Not all content is available!
It's likely this issue predates Contrib.social: some issue and comment data are missing.