Bugged Mob or GM profiling?

[boneclinks]

So yesterday I was farming for shards in the vale, using a grind mode, with 100% supervision for several hours. I encountered a Mogu who I got down to 5% health, and he kept me targeted but stopped attacking. Here is the odd thing, I could still hit/cast spells on him, but his HP would not decrease what so ever, I was glad I was watching the bot and caught it within seconds. So, I have tried searching for answers regarding Game Master spying, and trying to trick the bot. What do you think, is this just bad luck, or something more devious? I have to mention I have never seen any bug like this in all 100,000+ mogu killed, evasion bug yes, but not a mob that actually can be hit with no results, thanks!

 

[Giwin]

the bot will eventually leave if the mob is bugged, a GM spying? extremely rare and doubtful that they would try... it's all automatic nowadays.

 

[DaSoul]

There have always been rumors, that blizz is doing this but i don't think so. I think this was just a bugged mob. Today they have way better possibilities to detect bots for sure.