Is the behavior of the "Find" command, (⌘-F), in the Finder.app where "Name" is Different than "Filename" a new behavior?

AFAIK, Name varies by the given name of whatever the item within the Spotlight metadata.

Use the command-line mdls command to review the Spotlight metadata for the files of interest, and man mdls (and other resources) (and oddities) for some related details.

mdls /path/to/file
man mdls

This behavior is not exclusive to these calendar files, and it is not new. I remember seeing it with mp3 files some years ago, where search using name would apply to song name rather than file name. It has probably been like that for a long time.

markfromlandolakes wrote:

It’s also the results column that changes definition. If you search for “filename” the Name column shows the filename, if you search for “Name” the name column shows event name with ICS files anyway. I wonder if you have a search with “filename” and “name” what the definition of the first “name” column would be. I’ll have to try that. They should change the name of the first column to be consistent.

Alas, changing stuff — names — tends to break other stuff — existing stuff dependent on the existing nomenclature.