Camera hides the objects exactly at the middle of screen as a circle

[SamToorchi]

Godot version: 3.2.3

**OS/device including version: MacBook Pro 2014 with NVIDIA GeForce GT 750M 2 GB / MacOS 10.15.6 (Catalina) **

Issue description:
I have a very simple project structure. I use a camera and draw a CSGPolygon. The CSGPolygone will be drawing very well, but the camera (3D - GLES 2) always hide the CSGPolygon exactly in middle of the screen as a circle. If I rotate the camera to the other side, I can see, that the camera can show everything on the sides of the screen.

only move the mouse the little to the left side to see the generated CSGPolygon

Minimal reproduction project:
Project.zip

[Calinou]

I checked the project locally, and this is due to the object's surface being too far from the camera, which causes it to be cut off by its far plane. To fix this, increase the Camera's Far property to a value like 500. This will be done by default in 4.0 if #33207 is merged.