Facebook Messenger from chat heads outputs 2 letters per 1 keyboard press

Facebook Messenger from chat heads outputs 2 letters when the keyboard key is pressed only once.

It looks like this:
Screenshot 2024-09-10 9.16.11 AM

Version of FydeOS: FydeOS for PC (hd), v18.1, Unlicensed version
Platform 15662.71.18.17
Chromium 120.0.6099.314
Version of Facebook Messenger: 474.1.0.47.109