I checked the same place with terrain rendering issues again with FOV set to 130 degrees and now I can see it too:
so it is definitely not related to hardware, just a bug caused by game thinking that player is farther away when on high FOV and loading low quality terrain map instead of normal
Kerfur (standart, not omega) does have some type of object detection, because it is constantly jumping when stuck on something, so I think it will be better to replace the jumping by moving to the side until the path is free again, for example if there is a wall in front of it and it can't jump over it will just follow the right or left side of this wall until it can reach its target without intersecting this wall
like this:
Also I couldn't get the bug with plug teleporting anywhere, when I try to nail it to the ground and retract it it just starts flying around, I also tried it with smaller objects like a microwave, and it also does the same thing, but I noticed that after retracting it nails still remain flying in the air following the microwave: