thank you very much
Where are you opening the folder from?
i.e. ??? → Forklift
From the Forklift docs:
Default File Viewer
You can set ForkLift 4 as default file viewer, and almost every app (except the Desktop) will point to ForkLift when you choose Reveal in Finder, Show in Finder, or Open in Finder options. Paste the following command into Terminal (Applications > Utilities > Terminal) and hit Enter, then restart your Mac:
defaults write -g NSFileViewer -string com.binarynights.ForkLift;defaults write com.apple.LaunchServices/com.apple.launchservices.secure LSHandlers -array-add '{LSHandlerContentType="public.folder";LSHandlerRoleAll="com.binarynights.ForkLift";}'
To set Finder as the default file viewer again, use the following command, then restart your Mac:
defaults delete -g NSFileViewerdefaults write com.apple.LaunchServices/com.apple.launchservices.secure LSHandlers -array-add '{LSHandlerContentType="public.folder";LSHandlerRoleAll="com.apple.finder";}'
If you set ForkLift as the default file viewer and you remove it from your system, Finder will automatically become the default file viewer again.
thank you very much !