Rhino 8 geometry display issues

Hi, I have discovered a geometry display / definition issue that appeared suddenly while working with SubDs. I don’t know what causes the issue to appear, but I think I know what causes it after it appears.

The issue appears to be due to the “Displacement” plugin.
When I export the geometry with the “Save plugin data” checkbox unchecked, the exported file does not have any issues.
When I disable the “Displacement” plugin and restart Rhino, the original file also does not have any issues.

I have attached the two files here for reference.

Rhino_r2UwyVpxnO

rhino 8 geometry display issue without plugin data.3dm (3.0 MB)
rhino 8 geometry display issue with plugin data.3dm (3.0 MB)

Issue gone in SR9