Bug Based on the Newest Updates

This had actually started a couple weeks ago, when I had loaded in my world and noticed that my copper golems were missing. However, I could still hear them and see chests being opened around my base. A few days ago, when I was testing out the experiments for the newly named Tiny Takeover drop, I also saw that not only were the copper golems still missing, but so were their spawn eggs and statues. I looked down and saw that the newer mobs, including the camel husk, parched, nautilus, and zombie nautilus spawn eggs were all invisible, as well as their bodies. I put the eggs into my hotbar (in which it and it in my hand were still invisible), and the mobs were still not able to be seen, and yet I could still hear them and see their death particles. I can see all other mobs except those ones, though, except that every creeper I encounter appears to be charged (except that the charged animation is frozen). Another thing that’s weird is that instead of me being able to see the new baby mob variants (speaking about the chicken ones at the moment), I instead see the current version which instead has an enlarged head, so much so that it’s larger than the adult. I’ve also seen two other bugs that I won’t mention in this article due to it not being relevant. Please please please fix this as soon as possible!!