Noticing a lot of bugs in Diablo 4

Continuing the discussion from My armor in t4 on my spiritborn was 1400s its now zero and i didnt change anything:

I had the same thing happen to me my armor was low but only 782 but suddenly went to zero. As black blessed to give me an explanation of what’s going on this is more to just a glitch. I’ve noticed things happening all over the place one minute you are able to do tier 3 and and the next minute your week and get killed instantly like you have no resistance although your resistances are at 72 by the slightest poison kills you please explain blizzard.