Image Renaming, Mac's PREVIEW app: When typing a new name into name field at very top of Toolbar, how can I execute the rename with ENTER KEY?
It drove me nuts and I found the answer just here:
https://forums.macrumors.com/threads/can-no-longer-rename-files-in-preview.2035115/post-24469396

The cause turned out to be a hidden setting in
~/Library/Preferences/.GlobalPreferences.plist If
NSAutomaticWindowAnimationEnabled is set to NO, then the problem
occurs. If I turn it back to YES or delete that setting, renaming
files in Preview works again.
For those of you using something like TinkerToll or Onyx, the hidden
setting is in the General area and is called &quot;Animate opening
windows&quot;.