cannot rename image file using finder

Hi All -

I could use some insight from the community with a problem I've bumped into these last few days. I cannot rename some image files using finder. Here's a summary

Working with jpg files exported from Photos to a local folder on this iMac

Incorporating these image files into Pages document

image files present in photoslibrary on iMac internal SSD storage

cannot click to edit the file name

rename does not appear after right click

Some of these image files have been around for two years, which means I migrated them from my previous iMac about 18 months ago. Other image files are recent, and have been resident on my iPhone, iCloud photos, and this machine. I have not been able to narrow it down to any one specific batch of photos.

It occurs to me that the affected files may in some way have become corrupt on export from Photos.

I have a simple workaround via Preview. I can open the files in Preview and export them as jpg. However, this is a lot of work! I'm building a technical book 370 pages, 1.4 GB, in Pages.

I would estimate that 100 image files are affected. At least one image file that I exported a second time via Preview subsequently developed the same symptoms after a few minutes.

Images with information about this Mac, Pages, and Photos follow.

Thank You!