Replit messes up websocket

Problem description:
Replit turns normal message into a base64 octet stream for no apparent reason

Expected behavior:
Goes back out as an normal message

Actual behavior:
Replit turns normal message into a base64 octet stream for no apparent reason

Steps to reproduce:
I have no clue

Bug appears at this link:
https://replit.com/@Tycho10101/Client-Server/

Browser: Firefox
OS: Windows
Device (Android, iOS, NA leave blank): Old as heck ASUS
Desktop app version (Avatar menu->“Version”) or NA: NA
Plan (Free, Replit Core): Free