being pushed to the ground

[Sarcosuchus]

when I use poly marble, I am pushed to the ground, so sometimes I foul the boss (earh dragon, aqua dragon and beta bosses) farm. the same problem happens when I am not on a mount with my shaman, when I am not using poly marble and I cannot farm mobs in beta. for example lemurs

 

[Asteria]

Hello,

can you provide some short clip/video about it? Some bosses do have this skill to push you back, and its been like that since ever. Not sure on what exactly you mean by pushing back, the one that is existing since ever or some glitch...would be helpful.

Thank you in advance.
Regards.