Server authentication bug

https://youtu.be/2UhlLvT89-M
I don't know how it happened, but I managed to log in twice to this LAN world. The video was taken on 1.19 but it might still affect 1.19.1. To attempt to reproduce try to connect to a server and on the serverside between the time it takes to authenticate you and for you to join on your screen leave or Alt+F4 and repeat until you stay connected to the server, now rejoin.