Here's what I found for what I believe incomplete areas of the map, including missing water physics, rocks, or other areas.
Grass growing straight out of rock textures,
Map Border/skybox Seam
Limestone Pure node in an awkward angle
Level Tile mis-allignment
To the right of the crosshair, there's an incorrectly alligned piece of terrain
Not far from the last, floating polygon,
Floating Rocks nearby,
Invisable flat terrain near water, probably water not being applied properly.
You can walk ontop of it and pretend to be a god, until you fall down into proper water a bit past the flat terrain, and another invisable wall/flat terrain blocking you in, from both sides.
I've become god.
Further looking into it, can show that there is something causing a strange seam, probably something layered ontop of the water.
Floating bacon mushroom
Missing Terrain, Floating grass, it appears as land was supposed to be there
Seam in map's water border.
Funfact: If you keep swimming, you'll eventually swim into an area without water physics and fall to your death. I'd love it if it was an invisable wall instead.
Slug buried inside small rocks,
It looks kind of weird, and non-intentional.
Floating flowers near coral.
Green patch of grass near dryer grass
Slug buried in sand, looks kind of odd, and a strange place to put a slug
Floating rocks in desert
UV Seams on rocks in the desert
Intense repeating textures when looking at water.
Texture seam in the water near a waterfall
Generally appears to be an incomplete area, with missing water physics.
You can walk under the water with clear vision.
Further exploration under this ocean, reveals a small grass patch.
Missing rock mesh
You can walk through the other rocks using this rock though.
Invisable shrubbery and leaves in a desert basin/ravine place
Restarting the save doesn't fix the problem
Missing water physics near waterfall.
this means you can fall from the waterfall, and take falling damage from hitting the ground, with a clear view of under the water.
Inverted geometry stuck trap,
Extra reference, not far from here - https://gyazo.com/590f5351239aafd22880e0be20411a7c
It appears as the faces for this rock is inverted, causing a collision trap for the player, and the poor doggo stuck inside.
This is a pretty notable bug
Floating nuts near copper deposits.
Missing water physics.
- Theres also numbers ontop of the water here.
The biome loooks incredible though
Mushrooms usually found in caves, located in the open, possibly incomplete cave?