Problem: Unwanted cutting plane appears 2m in front of camera in 3D window

[Anonymous]

So trying to narrow this down.... by turning off layers to simplify....

I'm left with 3 layers turned on in the plan view window...
Terrain: only has one big mesh object.
Exterior Walls: has 4 wall objects.
Archicad Layer: has nothing (but I can't turn it off)

I have the 3D view set to OpenGL. I navigate using SpaceExplorer 3D mouse.

With nothing selected, I hit F5 (I'm on Windows, so f5 to display everything in 3D window)
Result: The mystery cutting plane cuts through objects in front of moving camera.

In plan view, I press ctrl-A (select all), and hit f5 again.
Result: No annoying cutting plane!

So the problem only happens when I don't specifically select the objects I want to shown in the 3D window, and instead rely on AC to automatically draw all the visible objects, that I have showing in plan, in my 3D window (which is the default way of working).

BTW, my AC23 version is 4006 NZE

Minh: do you still want me to send you my minimum file to try recreate this situation here?