I have seen this error in the Legacy & New editors in Confluence Cloud.
An image simply attached to a page will have a clickable preview.
If the same image is placed within a Table or UI macro, it is no longer clickable nor has a preview.
Additionally, when right clicking Open in New Tab, instead a copy of the image is downloaded. Same if a link to the image is added in options.
This seems like a bug, but I wanted to check if anyone else is seeing this issue?