File Preview Sometimes Missing, Sometimes Present

Is anyone else seeing this behavior? Recent files window show thumbnail images of 'some" files, whereas others do not appear. Been seeing this for a while and cannot determine why this might be.

Rhino 8 SR4 2024-2-6 (Rhino 8, 8.4.24037.15002, Git hash:master @ bee9cb852c752350676ca6bc7f3f6946b5bbc6b7)
License type: Commercial, build 2024-02-06
License details: Cloud Zoo

Apple macOS Version 14.1.2 (Build 23B92) (Physical RAM: 64GB)
Mac Model Identifier: MacBookPro18,2
Language: en-US (MacOS default)
.NET 7.0.0

Metal GPU Family Apple 7
Metal GPU Family Common 3
Metal GPU Family Mac 2
Graphics processors
Apple M1 Max
Thunderbolt Display (2560 x 1440 @ 60.00Hz)
Color LCD (1728 x 1117 @ 120.00Hz)
LED Cinema Display (2560 x 1440 @ 60.00Hz)

USB devices
Logitech: USB Receiver
Apple Inc.: Apple Thunderbolt Display
Apple Inc.: FaceTime HD Camera (Display)
Apple Inc.: Display Audio
Apple, Inc: Apple Keyboard
SanDisk: Cruzer Snap

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
/Library/Frameworks/3DconnexionClient.framework/Versions/A/3DconnexionClient
/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/libswiftVideoToolbox.dylib
/usr/lib/swift/libswiftObservation.dylib
/usr/lib/swift/libswiftWebKit.dylib
/usr/lib/swift/libswiftNaturalLanguage.dylib
/usr/lib/swift/libswiftSystem.dylib
/usr/lib/swift/libswiftMapKit.dylib
/Users/johnwilliams/Library/Application Support/McNeel/Rhinoceros/8.0/MacPlugIns/bella_rhino.rhp/libbella_dotnet_native.dylib
/usr/lib/log/liblog_network.dylib

Rhino plugins that do not ship with Rhino
/Users/johnwilliams/Library/Application Support/McNeel/Rhinoceros/8.0/MacPlugIns/bella_rhino.rhp “Bella” 23.6.0.0

Rhino plugins that ship with Rhino
/Applications/Rhino 8.app/Contents/Frameworks/RhMaterialEditor.framework “Renderer Development Kit” 8.4.24037.1002
/Applications/Rhino 8.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/Commands.rhp “Commands” 8.4.24037.15002
/Applications/Rhino 8.app/Contents/PlugIns/NamedSnapshots.rhp “Snapshots” 8.4.24037.1002
/Applications/Rhino 8.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RDK_EtoUI.rhp “RDK_EtoUI” 8.4.24037.15002
/Applications/Rhino 8.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/MeshCommands.rhp “MeshCommands” 8.4.24037.15002
/Applications/Rhino 8.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RhinoRenderCycles.rhp “Rhino Render” 8.4.24037.15002
/Applications/Rhino 8.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RhinoCycles.rhp “RhinoCycles” 8.4.24037.15002
/Applications/Rhino 8.app/Contents/PlugIns/AnimationTools.rhp “AnimationTools” 8.4.24037.1002
/Applications/Rhino 8.app/Contents/PlugIns/SectionTools.rhp “SectionTools” 8.4.24037.1002
/Applications/Rhino 8.app/Contents/PlugIns/RhinoRender.rhp “Legacy Rhino Render” 8.4.24037.1002
/Applications/Rhino 8.app/Contents/PlugIns/Displacement.rhp “Displacement” 8.4.24037.1002
/Applications/Rhino 8.app/Contents/PlugIns/import_ACAD.rhp “AutoCAD file import: import_ACAD” 8.4.24037.1002
/Applications/Rhino 8.app/Contents/PlugIns/PanelingTools.rhp “PanelingTools” 8.4.24037.1002
/Applications/Rhino 8.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RhinoDLR_Python.rhp “IronPython” 8.4.24037.15002
/Applications/Rhino 8.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/GrasshopperPlugin.rhp “Grasshopper” 8.4.24037.15002
/Applications/Rhino 8.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RhinoCodePlugin.rhp “RhinoCodePlugin” 8.4.24037.15002