I can report that I am also seeing the same issue in the latest WIP.
It’s been an issue for the last few WIP. Just never reported.
Just starting from a blank document and doing the same thing seen in Kev R’s movie produces the same results.
Version 6 WIP (6.12.18317.12076, 2018-11-13)
My system info.
Rhino 6 SR12 2018-11-13 (Public Build, 6.12.18317.12076, Git hash:master @ 069b1aed33ba5c9e6b04dd9e509ff8509a57719d)
Licence type: Beta, build 2018-11-13
License details: Cloud Zoo. In use by: Jason Bartley ()
Expires on: 2018-12-28
Apple Intel 64-bit macOS Version 10.14.1 (Build 18B75) (Physical RAM: 32Gb)
Machine name: Jason’s MacBook Pro
Language: en-US (MacOS default)
AMD Radeon Pro 560X OpenGL Engine (OpenGL ver:4.1 ATI-2.2.8)
OpenGL Settings
Safe mode: Off
Use accelerated hardware modes: On
Redraw scene when viewports are exposed: On
Anti-alias mode: 4x
Mip Map Filtering: Linear
Anisotropic Filtering Mode: Height
Vendor Name: ATI Technologies Inc.
Render version: 4.1
Shading Language: 4.10
Driver Date: (null)
Driver Version: (null)
Maximum Texture size: 16384 x 16384
Z-Buffer depth: 24 bits
Maximum Viewport size: 16384 x 16384
Total Video Memory: 4 GB
Displays: LG Ultra HD (255dpi 2x), Color LCD (258dpi 2x)
Screen size: 3008 x 1692, 1680 x 1050
USB devices
Western Digital: My Passport 25E3
Other World Computing: OWC Thunderbolt 3 Audio Device
Western Digital: My Passport 25E3
Logitech: USB Receiver
EPSON: USB2.0 MFP(Hi-Speed)
Apple Inc.: iBridge DFR brightness
Apple Inc.: iBridge Display
Apple Inc.: Apple Internal Keyboard / Trackpad
Apple: Headset
Apple Inc.: iBridge ALS
Apple Inc.: iBridge FaceTime HD Camera (Built-in)
Apple Inc.: iBridge
Bluetooth devices
Broadcom: Magic Keyboard with Numeric Keypad
Broadcom: Magic Trackpad 2
Third party kernel extensions
com.Logitech.Control Center.HID Driver (3.9.7) no UUID
Third party plugins
/usr/lib/log/liblog_network.dylib
Rhino plugins
/Applications/RhinoWIP.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RhinoCycles.rhp “RhinoCycles” 6.12.18317.12076
/Applications/RhinoWIP.app/Contents/PlugIns/NamedSnapshots.rhp “Snapshots” 6.12.18317.1002
/Applications/RhinoWIP.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/GrasshopperPlugin.rhp “Grasshopper” 6.12.18317.12076
/Applications/RhinoWIP.app/Contents/PlugIns/PanelingTools.rhp “PanelingTools” 6.12.18317.1002
/Applications/RhinoWIP.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/Commands.rhp “Commands” 6.12.18317.12076
/Applications/RhinoWIP.app/Contents/Frameworks/RhMaterialEditor.framework “Renderer Development Kit” 6.12.18317.1002
/Applications/RhinoWIP.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RDK_EtoUI.rhp “RDK_EtoUI” 6.12.18317.12076
/Applications/RhinoWIP.app/Contents/PlugIns/Displacement.rhp “Displacement” 6.12.18317.1002
/Applications/RhinoWIP.app/Contents/PlugIns/Alerter.rhp “Alerter” 6.12.18317.1002
/Applications/RhinoWIP.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RhinoDLR_Python.rhp “IronPython” 5.1.2015.132
/Applications/RhinoWIP.app/Contents/PlugIns/RhinoRender.rhp “Rhino Render” 6.12.18317.1002