As the title says, Companions/Mount disappears on death and randomly. This is a huge problem as we are unable to use our Cataphract abilities, this happens more often in dungeons but it’s happened a few times in other zones and i need to leave or logout to fix it.
This could be because when mounting, the system see your companion as a buff on your character and not a wild dumb beast as he usually does.
Tip : Dont die, unmount when its not required at least until they announce some kind of solution 