For the past several days I have encountered screens devoid of the aforementioned. This last for minutes. To avoid this I tele, if I can, or type the warp I wish to go to. Then when I return to the formerly empty area there are mobs and NPCs. And then there is chronic lag, varying from a few seconds to very many seconds. The hunting areas and towns involved are all that I have been to ( at least a score ).
Not sure, this isn’t something everyone is getting, it has to be your connection.