Multiple times that invisible enemies have killed both me and my friend during survival. This has happened AFTER the newest update (18NOV20) i believe. Now we gotta start from level 0 from 30+. Affected monsters are Skeletons ( projectiles still are visible AFTER they are fired from the bows) and endermen (While we were getting attacked, be both took turns looking for said enderman to find no enemy, but damage still occured,) and only occurance of a zombie invisible. 

Now, All invisible enemies can still be hit as the sound can be heard, but are not visible even after death. Zones of occurrences are Nether (Endermen), Caves/Mines (skeletons) and woods for Zombies

Please look into this. we are trying to beat this game for the first time, but this is not helping at all