This may be an issue with the addons themselves. They may not have been coded correctly.
This is incorrect. Even though a lot of the caves are water logged there are still caves that don't have water. You just gotta look for them a bit more.
Are you using a character creator skin? If so, is the body size "Smaller"?
I noticed this as well in 1.17, but it might also be a feature.
This crash might not be logged though, because when it freezes it doesn't exit Minecraft. It just stays frozen on the last image. The only way to exit Minecraft then is to restart my computer.
I also noticed this happens with a lead. When you attach it to a mob when using a "Smaller" character, the lead is right in front of your face and it blocks a lot of vision.
I also just realized something similar happens with a lead. When attached to a mob it looks like it's attached to my head when I'm at the "Smaller" size.
Thanks for adding a screenshot, unfortunately I still haven't found anything that helps with the issue. When I was trying to play the map, the chunk rendering cut of at the same spot. I've also been experiencing the same issue of chunk rendering whenever I'm moving at fast speeds in another marketplace map (Dragon Expansion). Fortunately in this map it's still playable, but whenever I'm flying on a dragon the rendering is horrible.
Oh, my bad. I guess I got mixed up with the emails XD. I'll remove that comment.