Artwork for show and artwork for scheduled recordings don't match

Screenshot 2023-09-09 at 09-44-46 Channels The Adventures of Superman
Screenshot 2023-09-09 at 09-45-07 Channels Schedule

I'm not sure what you're saying. That the art on the recording isn't the same as the art on the grouping show?

This has always been the case.

Scheduled recordings

All the rest are correct, like these

Maybe this will help narrow it down.
On my DVR with FrndlyTV as a source I used the search box and got this

Clicking on the TV Show displays this
Screenshot 2023-09-09 at 11-25-41 Channels The Adventures of Superman

Same thing on my DVR with an HDHR Prime as a source

zap2it has it right