Summary
Okay so 2 or 3 different bugs happened, bear with me if you will. I will just try to tell as much as I can about these different things and hopefully it will be of some help.
We are on the same network, it is my wife and I playing the game. As far as the first bug, you can see this one in the medal link video, this crazy thing happened where we were on the raft then got attacked by a goblin shark out in the ocean, stopped to try to fight it and upon getting thrown in the water, I threw a spear at it, then it hitting me caused me to fly out of the world into a black void where I was stuck and my health slowly went down over like a super super super long time. My wife was fine and just had to get out of there but I was unsavable and she was obviously not going to be able to help me as I was body glitching outside of the world and my health timer after being downed was going down unbelievably slow. We did reload the save and the goblin shark was there but was not as aggressive as it was before and this did not happen again, although I did not allow myself to be hit again by it, we just tried to play normally and avoid it after this happened after we reloaded the save.
So all that was the first bug.
Second bug happened next with when I was crafting a bow and arrows. It kept having items flying in the air and making it to where we couldn’t interact with anything or sleep and things like that. I don’t have a clip of this one sorry. But it is the same seed and same world. Sometimes items will just fly and will be in hand for one of us and doing something else for the other person, it seems like a type of desync problem. Even when we are on the same wifi network living in the same house, we still have desyncs like this sometimes, yes this has happened before but through time with your updates it has gotten better. It used to crash every 30 minutes for multiplayer co-op, but now it is just things like this and sometimes it will get to a point where we just have a hiccup like this with bow and arrow crafting where we have to loophole around it to get it from desyncing or we won’t be able to continue the save. It is all very weird and this is really as much as I can tell you.
As far as our rigs, we are on gaming laptops, my wife’s is an ROG Strix g16 model RTX 4060 64gb ram 4tb SSD, 8 Vram, Intel Core I7 3th gen. My gaming laptop is Lenovo RTX 4060 Intel Core I5 13th gen, 32 gb RAM, 8 Vram, 4tb SSD, 5gb SSD. both computers are also windows 11.
Seed
We cannot find it sorry.
Settings
Were any of your settings changed from the default options and have you added any custom Islands?
Here are the settings for the same world that had all 3 bugs happen at different times, but they were unrelated to each other as far as anything we can tell and happened like a day or two (real-time) apart.
World was default, normal.
Wildlife - Normal
Genders - Male (me) - Female (my wife)
Permadeath - off
Extras
-Have you tried reloading your save, game or PC? Yes
-Have tried reinstalling the game? Didn’t need to, got in contact with sharks again, but this has not happened again. Also no major bad things like that have happened again. I was able to eventually craft a bow and arrows without it being game bug ending. It did go away on its own but it look like 30 minutes working with random things to try to get around the issue, but we were not able to restart the game or save the game because the shelter also kept saying something like [another player is busy right now] which we were not and we were both standing there trying to sleep not even holding or doing anything. So that is another bug…
-Please feel free to provide any other information you feel may be relevant to this issue.
I just thought I should submit this to help in any way I can, do with it what you will. Big ol’ bug dump. Hopefully some of this helps. Thanks for all y’all’s work and we love the game lots. 
-Images / Links - If you have any images or clips of the issue happening, please include them.
this is the link of the shark attack bug, i do not have a clip of the other thing happening sorry. I can just tell you what happened.
This is the link for the first bug here:
(Untitled - Clipped with Medal.tv)