Ubisoft, like Poseidon, sends a big, punishing wave of ban to all those who used Rainbow Six Siege chat to force end their matches. A bug caused that spamming emotes froze the game. The developer officially announced "sanctions" on Reddit. The team mentioned the Code of Conduct, which prohibits disrupting the fluidity of the game, and added:
These bans are targeting players that abused the chat symbol exploit to crash matches. They will have varying lengths, depending on the frequency and severity of the exploit's usage. This is our next step towards sanctioning players that knowingly and deliberately take advantage of exploits to the detriment of the overall match.
So if you happen to cut your unsuccessful game short in this way, be prepared for the consequences. And if you did it every time... well, let us know next year whether you can log in. Ubisoft clearly wants to approach the subject decisively and uncompromisingly. And they will have a lot of work to do, because the players are constantly finding newer and newer exploits.