Unraid 7rc1: Encrypted Zfs can not be decrypted via `/root/keyfile` automatically at startup

I have a RaidZ2 Zfs Pool encrypted with the passphrase "1234Test" via the gui.    manually uploading a keyfile with the phrase via gui also works to start the pool.

However when I try to automate it, the gui states "Wrong Encryption Key".    Here is my /boot/config/go file

#!/bin/bash

# Define the key content
key_content='1234Test'

# Write the key content to /root/keyfile
echo "$key_content" > /root/keyfile

# Secure the keyfile by setting permissions
chmod 600 /root/keyfile

# Start the unraid web based Management Utility
/usr/local/sbin/emhttp

I have verified the contents of keyfile are "1234Test" without the quotes, and also tried changing the go file to copy a keyfile instead of creating it by script.

Why urgent:  it seems zfs pools can not be automatically decrypted, and perhaps the passphrase used to encrypt is not byte identical to user input

Edit:   attached is an image after reboot.  I can press the "Delete encryption keyfile" button, then type 1234Test into the passphrase and it will start.