[Bug?] The surface edge does not display correctly

Rhino Rhino for Windows
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1

Bug report link: RH-60270

VIDEO DESCRIPTION

SETUP

NOTE
Enclosed you will find the Rhino3d file.
Surface edge.3dm (640.7 KB)

ENVIRONMENT
Windows 10 64 | i5 9600K | 100Gb Ram | GTX 1080Ti
Rhino 7 Work In Progress (7.0.20245.13385, 9/1/2020)