A few things I've seen so far:
Sloped endwalls cannot be placed on top of other walls, even walls with ceilings. Rotating the thatched roof slopes (or anything else) doesn't seem to work, either.
The pet dog cannot climb upon floors, even ones were the floor is close to the ground. I suspect that wolves and other hostiles have the same issue.
The codex doesn't seem to be accessible.
Sex stats doesn't seem to be accessible. The keybind doesn't seem to work for it.
Exploration exp seems to be broken, with locations previously known granting newly discovered exp. This seems to be infinitely spamable, although to be fair I've only seen the message pop up repeatedly. I don't know if it's actually granting exp.
I rebind my movement keys to WERD (with S/F for up/down) as opposed to WASD. This is fine until I attempt to move the camera in a sex scene. It appears that there is a hard coded WASD routine that works alongside my WERD setup, yielding some odd camera movement.
Chopping trees and mining rocks can sometimes yield blood being splashed on the ground and on the PC. No damage to the player is indicated, however.
The rotate option during character creation is too sensitive. Any usage of shift-scroll can yield to a rapidly spinning character model.
There are npcs at camp bear. Masturbating leads to whoopie which can lead to pregnancy. The pregnancy is instantly completed and the "birth" yields no offspring.
The green characters that look like orcs and are labeled "character" can't impregnate the player character.
Doing the nasty in the dungeon teleports you to a largish blue platform with a rock/gravel tiled floor with one short wall segment upon it. Jumping off leads to a short fall, then a undead death and a locked/crashed game.
Lactation starts too early, imho. Perhaps delay it for the final 33% or 25% of the pregnancy. That way the milk begins somewhat closer to how it does in reality, and delaying it also makes the initiation of lactation a more memberable event and a signal that birth is about to happen.
The mage's quest for having sex with 5 werewolves never seems to count any sex act. Tried defeat and crafted companion sex, doesn't work. I also tried masturbate which wasn't counted either. Speaking of masturbate...
Masturbate is OP as f****. Start on the beach as a nekid lvl 1 character. Run past the mine and go up the mountain into the hard zones. Any humanoid hostile encountered can be charmed for a bit by... masturbating. Mr. 4 grit gorebelly doesn't care about your character only having 1 grit; he's getting some. The hyper difficult 5-grit drake guys? Run up to them and get rubbin'. Do that often enough and you'll have a drake pregnancy. And never any damage taken. Even if your late with the wank and you get hit and downed... pressing the masturbate key stops the hostile finishing the PC off in favor of getting some luvin'. Pure cheese.