Hub News Intermittently Disappearing

Hi There - having an intermittent issue with some users that the HUB News doesn't show on their session.  They have permissions to all of the HUB sites - but for some reason, some of the news just decides not to show.  There are no filters set in the settings for the web part.

Their session looks like this:

Just curious if anyone else has had this issue as well, or if there's a fix available.

(I have tried unlinking and relinking the hub association)

Thank you!