How to eliminate stray lines

What are the stray lines in this Raytrace view and how do I eliminate them? I don’t seem to be able to select them. They seem to be artifacts of the raytrace processing.
(running V8 on MacBook (intel))

FYI - systeminfo:
Rhino 8 SR9 2024-6-11 (Rhino 8, 8.9.24163.15302, Git hash:master @ 17c7f1c7c05ff0e0b5b12288d13a911b1f0767b4)
License type: Commercial, build 2024-06-11
License details: Cloud Zoo

Apple macOS Version 14.5 (Build 23F79) (Physical RAM: 32GB)
Mac Model Identifier: MacBookPro16,1
Language: en-US (MacOS default)
.NET 7.0.0

Metal GPU Family Apple 0
Metal GPU Family Common 3
Metal GPU Family Mac 2
Graphics processors
Intel UHD Graphics 630 (1536 MB)
AMD Radeon Pro 5500M (8 GB)
Color LCD (1536 x 960 @ 59.00Hz)
GPU Vendor: AMD

USB devices
Apple: composite_device
Apple Inc.: Touch Bar Backlight
Apple Inc.: Touch Bar Display
Apple Inc.: Apple Internal Keyboard / Trackpad
Apple: Headset
Apple Inc.: Ambient Light Sensor
Apple Inc.: FaceTime HD Camera (Built-in)
Apple Inc.: Apple T2 Controller

Bluetooth devices
None

Third party kernel extensions
None

Third party plugins
/usr/lib/swift/libswiftCore.dylib
/usr/lib/swift/libswiftCoreFoundation.dylib
/usr/lib/swift/libswiftCoreGraphics.dylib
/usr/lib/swift/libswiftCoreImage.dylib
/usr/lib/swift/libswiftDarwin.dylib
/usr/lib/swift/libswiftDispatch.dylib
/usr/lib/swift/libswiftIOKit.dylib
/usr/lib/swift/libswiftMetal.dylib
/usr/lib/swift/libswiftOSLog.dylib
/usr/lib/swift/libswiftObjectiveC.dylib
/usr/lib/swift/libswiftQuartzCore.dylib
/usr/lib/swift/libswiftUniformTypeIdentifiers.dylib
/usr/lib/swift/libswiftXPC.dylib
/usr/lib/swift/libswift_Concurrency.dylib
/usr/lib/swift/libswiftos.dylib
/usr/lib/swift/libswiftsimd.dylib
/usr/lib/swift/libswift_StringProcessing.dylib
/usr/lib/swift/libswift_RegexParser.dylib
/usr/lib/swift/libswiftCryptoTokenKit.dylib
/usr/lib/usd/libusd_ms.dylib
/usr/lib/swift/libswiftCoreAudio.dylib
/usr/lib/swift/libswiftCoreLocation.dylib
/usr/lib/swift/libswiftCoreMedia.dylib
/usr/lib/swift/libswiftCompression.dylib
/usr/lib/swift/libswiftCoreMIDI.dylib
/usr/lib/swift/libswiftAVFoundation.dylib
/usr/lib/swift/libswiftCoreML.dylib
/usr/lib/swift/libswiftFileProvider.dylib
/usr/lib/swift/libswiftIntents.dylib
/usr/lib/swift/libswiftAccelerate.dylib
/usr/lib/swift/libswiftGLKit.dylib
/usr/lib/swift/libswiftGameplayKit.dylib
/usr/lib/swift/libswiftMetalKit.dylib
/usr/lib/swift/libswiftModelIO.dylib
/usr/lib/swift/libswiftSceneKit.dylib
/usr/lib/swift/libswiftSpriteKit.dylib
/usr/lib/swift/libswiftVision.dylib
/usr/lib/swift/libswiftRegexBuilder.dylib
/usr/lib/swift/libswiftDemangle.dylib
/usr/lib/swift/libswiftShazamKit.dylib
/usr/lib/swift/libswiftObservation.dylib
/usr/lib/swift/libswiftVideoToolbox.dylib
/usr/lib/swift/libswiftWebKit.dylib
/usr/lib/swift/libswiftNaturalLanguage.dylib
/usr/lib/swift/libswiftSystem.dylib
/usr/lib/swift/libswiftMapKit.dylib
/usr/lib/log/liblog_network.dylib

Rhino plugins that do not ship with Rhino
/Users/mattblake/Library/Application Support/McNeel/Rhinoceros/packages/8.0/Bullant/23.10.24.0/bullant.rhp “bullant” 23.10.24.0
/Users/mattblake/Library/Application Support/McNeel/Rhinoceros/packages/8.0/rhinopbrmaterial/1.1.4+v6.16/RhinoPbrMaterial.rhp “RhinoPbrMaterial” 1.1.2.0
/Users/mattblake/Library/Application Support/McNeel/Rhinoceros/packages/8.0/CommandTracker/8.0.0/CommandTracker.rhp “CommandTracker” 8.0.0.0
/Users/mattblake/Library/Application Support/McNeel/Rhinoceros/packages/8.0/RhinoFileVersion/7.0.8486/RhinoFileVersion.rhp “Rhino 3DM File Version” 0.0.0.0
/Users/mattblake/Library/Application Support/McNeel/Rhinoceros/packages/8.0/AMDDenoiser/0.5.3/AMDDenoiser.Mac.rhp “AMDDenoiser.Mac” 1.0.0.0

Rhino plugins that ship with Rhino
/Applications/Rhino 8.app/Contents/Frameworks/RhMaterialEditor.framework “Renderer Development Kit” 8.9.24163.1002
/Applications/Rhino 8.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/Commands.rhp “Commands” 8.9.24163.15302
/Applications/Rhino 8.app/Contents/PlugIns/NamedSnapshots.rhp “Snapshots” 8.9.24163.1002
/Applications/Rhino 8.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RDK_EtoUI.rhp “RDK_EtoUI” 8.9.24163.15302
/Applications/Rhino 8.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/MeshCommands.rhp “MeshCommands” 8.9.24163.15302
/Applications/Rhino 8.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RhinoRenderCycles.rhp “Rhino Render” 8.9.24163.15302
/Applications/Rhino 8.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RhinoCycles.rhp “RhinoCycles” 8.9.24163.15302
/Applications/Rhino 8.app/Contents/PlugIns/AnimationTools.rhp “AnimationTools” 8.9.24163.1002
/Applications/Rhino 8.app/Contents/PlugIns/SectionTools.rhp “SectionTools” 8.9.24163.1002
/Applications/Rhino 8.app/Contents/PlugIns/RhinoRender.rhp “Legacy Rhino Render” 8.9.24163.1002
/Applications/Rhino 8.app/Contents/PlugIns/RhinoBonusTools.rhp “Rhino Bonus Tools” 8.9.24163.1002
/Applications/Rhino 8.app/Contents/PlugIns/Displacement.rhp “Displacement” 8.9.24163.1002
/Applications/Rhino 8.app/Contents/PlugIns/PanelingTools.rhp “PanelingTools” 8.9.24163.1002
/Applications/Rhino 8.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RhinoDLR_Python.rhp “IronPython” 8.9.24163.15302
/Applications/Rhino 8.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/GrasshopperPlugin.rhp “Grasshopper” 8.9.24163.15302
/Applications/Rhino 8.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RhinoCodePlugin.rhp “RhinoCodePlugin” 8.9.24163.15302

Hi Matt - probably best to post a file that shows the problem, or send to tech@mcneel.com with a link back here in your comments.

-Pascal