telnet commands are not recognized

[fuzzyweapon]

Steps

1. brew install telnet on MacOS
   (I use iterm2, but Terminal app should be fine)
2. telnet telnet.sibr.dev
3. help
4. Observe server's response

Expected Result

help command runs and displays help

Actual Result

No commands are recognized (actual output included at end of issue).
This shows that the server is getting some kind of input from the user, but since I was able to send the help command using Atlantis mush client and have it execute as expected, I can infer that telnet is probably sending some hidden characters that are not being handled correctly by the telnet server.

type "help" and press enter for more commands.
help
Unknown command: help
Did you mean: help

[loftyinclination]

does this do the same thing if you type help again after getting the first error message?