While i was in the PVP an enderdragon killed me i believe that i should get my stuff back because it was in the PVP and that should of not happened

An Enderdragon spawns in Events, While someone is in MA. When you get to a certain level, It spawns a Enderdragon to kill. The people in MA maybe of died. Due to PVP area, and Ma areas are in Events world, the Enderdragon may go out of the MA space, and go into the PVP area. And that's how the Enderdragon can go into the pvp.