Isocurve and edges not showing in plan view

display_no_isocrv.3dm (3.2 MB)

i have strange display issue - maybe a bug.
the small surface is displayed without isocurve and edges.
the bigger surface is displayed as expected.

ClearAllObjectDisplayModes does not fix it.
the small surface was drawn in the pc version of rhino.

running Version 7 (7.7.21160.05002, 2021-06-09) on 10.15.7 (19H15)

any ideas how to fix this ?

Hi Tom - UntrimBorder fixes it, but at the moment I have no idea why that should be.
Actually, refreshing the shading mesh is really what fixes it with untrimming - RefreshShade will do that.


many thanks.

did the trick