Yeah it still does happen , but it seems like now it's random and can happen by just switching the map. Although I don't seeem to take any damage anymore , it does remove the Guild Buff from the player (which might have been the case to begin with) and the solution for that for what the community came up with is simply relogging ( but it still happens after sometime)
I am not really sure how to reproduce the problem since this happend mostly during spars randomly , but I just noticed that while my mission in game just now was done (Relaxing Spa mission) , the afk mode triggered and my buff disappeard including the extra hp and chakra.