Right now, projects will appear empty (even showing “0 files” in the count at the bottom) if they only contain private files that the viewer does not have access to.
I have admin access for my organization, and even I can’t see if a project does or does not contain private files. We’ve had issues where projected were deleted because they appeared empty, but in fact contained private files.
It would be helpful if Figma could indicate if a project contains private files. Even a warning before deleting the project would be appreciated. Right now there is no indication.