Rhino 6 bug - display error for large surfaces [backface on both sides]

Rhino Rhino for Windows
1

The large scale surfaces or surfaces far from the origin are displayed by some error as the surfaces have backface from both sides. after the scaling of them and bringing to the global origin problem disappears. I would like to know if there is any workaround to this problem as it makes working on large scale site plans impossible for me.

Capture
Capture1474×633 49 KB

site.3dm (10.2 MB)

2

Hi - I see no problems with backfaces in the file you posted. In my display mode, the backfaces are set to be purple:

2019-09-12%20Backfaces
2019-09-12 Backfaces.gif696×424 857 KB

Could you please upgrade from your Undefined, build 2018-10-17 to the current 6.17 version and try again?
-wim

3

Update helped thanks for Reply.