I loaded in my world today that I have been playing on for quite a few months now, and I noticed that many chunks were missing in random places, including an area where I built an area for my animals, an area where I had a small farm, an area right in the middle of a railroad. all of these chunks have already been loaded and we walk through these areas all the time, so I know for a fact they weren't unloaded chunks that glitched. There was even an area where an entire lake spawned in the ground with a giant chunk missing in the middle, and before I had a railroad right over where the lake now was. I'm not sure if this is from the new update or anything, but now some of my pets are gone and there is a huge hole where my railroad to a village passed through. Another chunk is missing where I had a huge sugar cane farm, but I only have a picture of how it looks after, and there is no sign that it was even there before. There is also a glitch that only lets me use one of my boats, and if I get in the boat, my friend can only see me in the boat or floating above it, even if I'm out of the boat and walking around.