EA needs to answer why the desync wasn't fixed

So the latest patch said crossplay desync that happens when the play becomes 4 on 4 was fixed but that was a lie as it still happens.

I just literally had a champs match where my opponent took penalty on purpose to make it 4 on 4 and when the next period started the game desynced and disconnected. 

Please, why did EA say they fixed it when clearly that was not the case?