Truncated WiFi password

[GrahamDyer]

Odd issue: after provisioning my Enviro board with the WiFi password: "Pa55word" , I get an error and the log shows that the connection to WiFi failed with the password truncated, ie the last 2 characters missing.

! Failed to connect to SSID MyNetwork (password: Pa55wo): Authenticatation failure
2024-02-11 07:30:12 [error / 88kB] - cannot upload readings, wifi connection failed

Config.py looks like this:
_# network access details
wifi_ssid = 'MyNetwork'
wifi_password = 'Pa55wo'

If I re-provision the board, correct the password and reboot it does it again, if I change it in config.py then it sticks and works.