CR shows file assoc. for CR3 but there is no image preview on the down loader. I have the latest ver. of Bridge, CR and PS.
Do the thumbnails appear in the file manager?
I have same problem. Very annoying when loading photographs from different dates to different folders.
Just a thought, what size are your cr3 files. They may be larger that what is specified in the preferences?
Preferences - Thumbnails - Do Not Process Files Larger Than 1000 MB
That is the default and might want raising?