I am sure that a few weeks ago, it was possible to assist a player:
Imagine a player who accidently attacks or attracts a strong opponent. He tries to escape, the opponent follows.
Usually, I am able to select the player and enter the \"/assist\" command. I see the focus moving to the opponent. Previously, I was then able to attack the opponent to rescue the player.
Now, I only get the error message \"You must be grouped with the player to attack the opponent.\" This way, I cannot help him anymore.