Crash after closing a terminal

[Artyko]

🪲 Problem

When a player disconnects by closing a terminal (without quit command), the game crashing on \mudserver.py
line 175, in _check_for_messages
for uid, client in self._clients.items():
RuntimeError: dictionary changed size during iteration

💡 Possible solution

Iterating over a copy of self._clients dict

[fado]

Haven't been able to reproduce this so far.