A simple flat srf appears chopped up diagonally after the Latest up date

Rhino Rhino for Mac
1

What the heck is this, may latest update to R7.29
draw a rectangle - fillet - surface via planer crv - st-t

F-ed 7
F-ed 72992×1934 1.57 MB

2

Hi Randy -
Please run the Rhino SystemInfo command and copy-paste the result here.
-wim