Quote Originally Posted by lat9 View Post
That would explain it! Set those Category values to be different to get the sideboxes to display different content.
I set the Category values to different displays and realized I wasn't clear. Apologies! The repeated news-content data under each post's correct heading in sideboxes occurs within the same sidebox. The issue persists.

The same content is always populated by the last viewed article:

Click image for larger version.  Name: nb sidebox closeup 2021-05-01.png  Views: 24  Size: 16.4 KB  ID: 19545