Finder connects to FTP server, but has blank file list

# Description When I mount a LAN or WAN FTP share in Finder under High Sierra (10.13.6), it lists no files or folders. # Steps: 1. Connect to the server via Finder's "Connect to Server..." command ("Go" menu or ⌘K) 2. Enter the share URL as (e.g.) 'ftp://ftp.ngdc.noaa.gov/'. 3. Enter the credentials or sign in as a guest user (as appropriate) # Result The connection is successful (no error). A finder window opens up for the share, but the file display is blank. # Additional info Packets captured by Wireshark show the correct username and password are being sent, and are accepted, and that my computer receives the file list. Other FTP clients have no issues connecting or listing files from any of the servers I've tested. # Question How can I figure out why Finder doesn't display the FTP directory listing?