Not sure I'd call this a "cheat" since it's taking advantage of the game mechanics, but as of late I noticed when attacking rogues now do this thing where they crowd you so closely that all I can see is the back of my own character's head - so I am essentially firing "blind" when trying to defend myself. It's difficult to even see which way to dodge / move / etc.
Is this a new thing? It happened maybe 15 times this week alone, and was a rarity before.
It seems any time someone figures a way to exploit a weakness in the game it spreads like wildfire to all the other PvP players.
Depends on the surroundings.
Ex: if the space behind them is open but there is an "object" behind you then they will have a clear view while you will not.
Anytime I see new behavior and then suddenly it's repeated over and over by different players I can't help but wonder if it's not being talked about (on another forum, of course) as an exploit or weakness in the game mechanics.