Newest WIP creates 4 floating viewports when closing Rhino

Newest WIP creates 4 new viewports when closing the window. Did not happen in the previous version…

Rhino 9 SR0 2026-3-25 (Rhino WIP, 9.0.26084.12306, Git hash:master @ 90319a3baf21c85605c6c0166e6376839504696d)
License type: Educational, build 2026-03-25
License details: Cloud Zoo
Expires on: 2026-05-09

Apple macOS Version 26.3.1 (Build 25D2128) (Physical RAM: 16GB)
Mac Model Identifier: MacBookPro18,1
Language: en
.NET 9.0.1

Metal GPU Family Apple 7
Metal GPU Family Common 3
Metal GPU Family Mac 2
Graphics processors
Apple M1 Pro
DELL S2725QC (2560 x 1440 @ 120.00Hz)
GPU Vendor: Apple

USB devices
Realtek: HID Device
Generic: USB3.2 Hub

Bluetooth devices
None

Third party kernel extensions
None

Third party plugins
/usr/lib/swift/libswiftCore.dylib
/usr/lib/swift/libswiftObjectiveC.dylib
/usr/lib/swift/libswiftCoreFoundation.dylib
/usr/lib/swift/libswiftDarwin.dylib
/usr/lib/swift/libswiftDispatch.dylib
/usr/lib/swift/libswiftIOKit.dylib
/usr/lib/swift/libswiftSystem.dylib
/usr/lib/swift/libswiftXPC.dylib
/usr/lib/swift/libswift_Builtin_float.dylib
/usr/lib/swift/libswift_Concurrency.dylib
/usr/lib/swift/libswift_DarwinFoundation1.dylib
/usr/lib/swift/libswift_StringProcessing.dylib
/usr/lib/swift/libswiftos.dylib
/usr/lib/swift/libswiftDistributed.dylib
/usr/lib/swift/libswiftObservation.dylib
/usr/lib/swift/libswiftSynchronization.dylib
/usr/lib/swift/libswiftAccelerate.dylib
/usr/lib/swift/libswiftCoreAudio.dylib
/usr/lib/swift/libswiftCoreMedia.dylib
/usr/lib/swift/libswiftMetal.dylib
/usr/lib/swift/libswiftOSLog.dylib
/usr/lib/swift/libswiftQuartzCore.dylib
/usr/lib/swift/libswiftUniformTypeIdentifiers.dylib
/usr/lib/swift/libswiftVideoToolbox.dylib
/usr/lib/swift/libswiftsimd.dylib
/usr/lib/swift/libswift_RegexParser.dylib
/usr/lib/swift/libswiftCoreImage.dylib
/usr/lib/swift/libswiftCoreMIDI.dylib
/usr/lib/swift/libswift_DarwinFoundation2.dylib
/usr/lib/swift/libswift_DarwinFoundation3.dylib
/usr/lib/swift/libswiftCompression.dylib
/usr/lib/swift/libswiftCoreLocation.dylib
/usr/lib/swift/libswiftRegexBuilder.dylib
/usr/lib/swift/libswiftAVFoundation.dylib
/usr/lib/swift/libswiftNaturalLanguage.dylib
/usr/lib/swift/libswiftMLCompute.dylib
/usr/lib/swift/libswiftCoreGraphics.dylib
/usr/lib/swift/libswiftFoundation.dylib
/usr/lib/swift/libswiftSwiftOnoneSupport.dylib
/usr/lib/swift/libswiftsys_time.dylib
/usr/lib/swift/libswiftSpatial.dylib
/Library/Frameworks/3DconnexionClient.framework/Versions/A/3DconnexionClient
/usr/lib/usd/libusd_ms.dylib
/usr/lib/swift/libswift_errno.dylib
/usr/lib/swift/libswiftIntents.dylib
/usr/lib/swift/libswiftCoreMediaIO.dylib
/usr/lib/swift/libswiftCallKit.dylib
/usr/lib/swift/libswiftPassKit.dylib
/usr/lib/swift/libswiftAppleArchive.dylib
/usr/lib/updaters/libAppleTconUARPUpdater.dylib
/usr/lib/updaters/libT200Updater.dylib
/usr/lib/swift/libswiftDemangle.dylib
/usr/lib/swift/libswiftGLKit.dylib
/usr/lib/swift/libswiftMetalKit.dylib
/usr/lib/swift/libswiftModelIO.dylib
/usr/lib/swift/libswiftSceneKit.dylib
/usr/lib/swift/libswiftExtensionFoundation.dylib
/usr/lib/swift/libswiftGameplayKit.dylib
/usr/lib/swift/libswiftSpriteKit.dylib
/usr/lib/swift/libswiftMapKit.dylib

Rhino plugins that do not ship with Rhino
/Applications/RhinoWIP.app/Contents/PlugIns/import_USD.rhp	“Import USD”	9.0.26084.1002

Rhino plugins that ship with Rhino
/Applications/RhinoWIP.app/Contents/Frameworks/RhMaterialEditor.framework	“Renderer Development Kit”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/Commands.rhp	“Commands”	9.0.26084.12306
/Applications/RhinoWIP.app/Contents/PlugIns/NamedSnapshots.rhp	“Snapshots”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/Import_OBJ.rhp	“Import_OBJ”	9.0.26084.12306
/Applications/RhinoWIP.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/export_XAML.rhp	“export_xaml”	9.0.26084.12306
/Applications/RhinoWIP.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/QuadRemesh.rhp	“QuadRemesh”	9.0.26084.12306
/Applications/RhinoWIP.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/Export_OBJ.rhp	“export_OBJ”	9.0.26084.12306
/Applications/RhinoWIP.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RDK_EtoUI.rhp	“RDK_EtoUI”	9.0.26084.12306
/Applications/RhinoWIP.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/Import_glTF.rhp	“Import glTF”	9.0.26084.12306
/Applications/RhinoWIP.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/ShrinkWrap.rhp	“ShrinkWrap”	9.0.26084.12306
/Applications/RhinoWIP.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/export_SVG.rhp	“Export SVG”	9.0.26084.12306
/Applications/RhinoWIP.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/Export_glTF.rhp	“Export glTF”	9.0.26084.12306
/Applications/RhinoWIP.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/MeshCommands.rhp	“MeshCommands”	9.0.26084.12306
/Applications/RhinoWIP.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/Export_DAE.rhp	“Export_DAE”	9.0.26084.12306
/Applications/RhinoWIP.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/export_PDF.rhp	“PDF Export”	9.0.26084.12306
/Applications/RhinoWIP.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/export_IGES.rhp	“IGES Export Plug-in”	9.0.26084.12306
/Applications/RhinoWIP.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/Import_SVG.rhp	“Import_SVG”	9.0.26084.12306
/Applications/RhinoWIP.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/BlockEdit.rhp	“BlockEdit”	9.0.26084.12306
/Applications/RhinoWIP.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/Export_AMF.rhp	“Export_AMF”	9.0.26084.12306
/Applications/RhinoWIP.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RhinoRenderCycles.rhp	“Rhino Render”	9.0.26084.12306
/Applications/RhinoWIP.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/import_DST.rhp	“Import_DST”	9.0.26084.12306
/Applications/RhinoWIP.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/export_PLY.rhp	“PLY - Polygon File Format Export”	9.0.26084.12306
/Applications/RhinoWIP.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/Import_AMF.rhp	“Import_AMF”	9.0.26084.12306
/Applications/RhinoWIP.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RhinoCycles.rhp	“RhinoCycles”	9.0.26084.12306
/Applications/RhinoWIP.app/Contents/PlugIns/export_SKP.rhp	“SketchUp Export”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/Export_UDO.rhp	“Moray Export”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/import_RAW.rhp	“RAW Triangle Import”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/export_USD.rhp	“Export USD”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/Import_DGN.rhp	“MicroStation file import: import_DGN”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/import_E57.rhp	“E57 Import”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/import_VRML.rhp	“VRML Import”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/AnimationTools.rhp	“AnimationTools”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/Import_WAMIT.rhp	“WAMIT import”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/NamedPositions.rhp	“Named Position”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/import_SKP.rhp	“SketchUp Import”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/SectionTools.rhp	“SectionTools”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/Export_RAW.rhp	“Raw Triangles Export”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/MPlane.rhp	“MPlane”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/Export_XGL.rhp	“XGL Export”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/RhinoRender.rhp	“Legacy Rhino Render”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/Export_CD.rhp	“Cult3D Export”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/export_LWO.rhp	“Lightwave Export”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/export_SLC.rhp	“SLC Export”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/import_3MF.rhp	“import_3MF”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/export_STEP.rhp	“STEP Export”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/export_3MF.rhp	“export_3MF”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/Export_WAMIT.rhp	“WAMIT Export”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/Import_SLC.rhp	“SLC Import”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/Import_OFF.rhp	“OFF Import”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/Squish.rhp	“Squish”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/Export_X_T.rhp	“Parasolid Export”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/RhinoBonusTools.rhp	“Rhino Bonus Tools”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/RhinoLabsTools.rhp	“Rhino Labs Tools”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/Import_M.rhp	“Import_M”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/Import_X.rhp	“X Import”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/import_IGES.rhp	“IGES Import Plug-in”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/export_AI.rhp	“Adobe Illustrator Export”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/export_ACAD.rhp	“AutoCAD file export : export_ACAD”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/Displacement.rhp	“Displacement”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/import_LWO.rhp	“Lightwave Import”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/export_SAT.rhp	“ACIS Export”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/Export_CSV.rhp	“Comma Separated Value Export”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/import_PDF.rhp	“PDFReader”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/export_STL.rhp	“STL Export”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/import_VDA.rhp	“VDA Import”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/import_STEP.rhp	“STEP Import”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/export_FBX.rhp	“Export_FBX”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/Import_SolidWorks.rhp	“Solidworks Import”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/import_STL.rhp	“STL Import”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/Export_RIB.rhp	“Renderman Export”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/import_FBX.rhp	“Import_FBX”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/export_Points.rhp	“Points Export”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/export_VDA.rhp	“VDA Export”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/import_ACAD.rhp	“AutoCAD file import: import_ACAD”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/Export_X.rhp	“X Export”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/CreaseAngle.rhp	“CreaseAngle”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/export_3DS.rhp	“3D Studio Export”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/import_PLY.rhp	“PLY - Polygon File Format Import”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/MeshTools.rhp	“MeshTools”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/import_Points.rhp	“Points Import”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/PanelingTools.rhp	“PanelingTools”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/MeshFromPoints.rhp	“MeshFromPoints”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/export_VRML.rhp	“VRML/X3D Export”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/Import_GTS.rhp	“GTS Triangle Import”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/SolidTools.rhp	“SolidTools”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/Export_GTS.rhp	“GTS Export”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/Export_POV.rhp	“POV-Ray Export”	9.0.26084.1002
/Applications/RhinoWIP.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RhinoDLR_Python.rhp	“IronPython”	9.0.26084.12306
/Applications/RhinoWIP.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/GrasshopperPlugin.rhp	“Grasshopper”	9.0.26084.12306
/Applications/RhinoWIP.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RhinoCodePlugin.rhp	“RhinoCodePlugin”	9.0.26084.12306
/Applications/RhinoWIP.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/Grasshopper2Plugin.rhp	“Grasshopper2”	9.0.26084.12306
/Applications/RhinoWIP.app/Contents/PlugIns/ExportNavisworks.rhp	“Navisworks Export”	9.0.26084.1002

Seeing the same here. System Info:

Rhino 9 SR0 2026-3-25 (Rhino WIP, 9.0.26084.12306, Git hash:master @ 90319a3baf21c85605c6c0166e6376839504696d)
License type: Commercial, build 2026-03-25
License details: Cloud Zoo
Expires on: 2026-05-09

Apple macOS Version 26.3.1 (Build 25D2128) (Physical RAM: 16GB)
Mac Model Identifier: Mac14,12
Language: en-US (MacOS default)
.NET 9.0.1

Metal GPU Family Apple 7
Metal GPU Family Common 3
Metal GPU Family Mac 2
Graphics processors
Apple M2 Pro
DELL U2711 (2560 x 1440 @ 60.00Hz)
DELL U2415 (1920 x 1200 @ 60.00Hz)
GPU Vendor: Apple

USB devices
VIA Technologies Inc.: USB 2.0 BILLBOARD

Bluetooth devices
None

Third party kernel extensions
None

Third party plugins
/usr/lib/swift/libswiftCore.dylib
/usr/lib/swift/libswiftObjectiveC.dylib
/usr/lib/swift/libswiftCoreFoundation.dylib
/usr/lib/swift/libswiftDarwin.dylib
/usr/lib/swift/libswiftDispatch.dylib
/usr/lib/swift/libswiftIOKit.dylib
/usr/lib/swift/libswiftSystem.dylib
/usr/lib/swift/libswiftXPC.dylib
/usr/lib/swift/libswift_Builtin_float.dylib
/usr/lib/swift/libswift_Concurrency.dylib
/usr/lib/swift/libswift_DarwinFoundation1.dylib
/usr/lib/swift/libswift_StringProcessing.dylib
/usr/lib/swift/libswiftos.dylib
/usr/lib/swift/libswiftDistributed.dylib
/usr/lib/swift/libswiftObservation.dylib
/usr/lib/swift/libswiftSynchronization.dylib
/usr/lib/swift/libswiftAccelerate.dylib
/usr/lib/swift/libswiftCoreAudio.dylib
/usr/lib/swift/libswiftCoreMedia.dylib
/usr/lib/swift/libswiftMetal.dylib
/usr/lib/swift/libswiftOSLog.dylib
/usr/lib/swift/libswiftQuartzCore.dylib
/usr/lib/swift/libswiftUniformTypeIdentifiers.dylib
/usr/lib/swift/libswiftVideoToolbox.dylib
/usr/lib/swift/libswiftsimd.dylib
/usr/lib/swift/libswift_RegexParser.dylib
/usr/lib/swift/libswiftCoreImage.dylib
/usr/lib/swift/libswiftCoreMIDI.dylib
/usr/lib/swift/libswift_DarwinFoundation2.dylib
/usr/lib/swift/libswift_DarwinFoundation3.dylib
/usr/lib/swift/libswiftCompression.dylib
/usr/lib/swift/libswiftCoreLocation.dylib
/usr/lib/swift/libswiftRegexBuilder.dylib
/usr/lib/swift/libswiftAVFoundation.dylib
/usr/lib/swift/libswiftNaturalLanguage.dylib
/usr/lib/swift/libswiftMLCompute.dylib
/usr/lib/swift/libswiftCoreGraphics.dylib
/usr/lib/swift/libswiftFoundation.dylib
/usr/lib/swift/libswiftSwiftOnoneSupport.dylib
/usr/lib/swift/libswiftsys_time.dylib
/usr/lib/swift/libswiftSpatial.dylib
/usr/lib/usd/libusd_ms.dylib
/usr/lib/swift/libswift_errno.dylib
/usr/lib/swift/libswiftIntents.dylib
/usr/lib/swift/libswiftCoreMediaIO.dylib
/usr/lib/swift/libswiftCallKit.dylib
/usr/lib/swift/libswiftPassKit.dylib
/usr/lib/swift/libswiftAppleArchive.dylib
/usr/lib/updaters/libAppleTconUARPUpdater.dylib
/usr/lib/updaters/libT200Updater.dylib
/usr/lib/swift/libswiftDemangle.dylib
/usr/lib/swift/libswiftGLKit.dylib
/usr/lib/swift/libswiftMetalKit.dylib
/usr/lib/swift/libswiftModelIO.dylib
/usr/lib/swift/libswiftSceneKit.dylib
/usr/lib/swift/libswiftExtensionFoundation.dylib
/usr/lib/swift/libswiftGameplayKit.dylib
/usr/lib/swift/libswiftSpriteKit.dylib
/usr/lib/swift/libswiftMapKit.dylib
/Users/kalebseigle/.rhinocode/py313-rh9/libpython3.13.dylib
/Users/kalebseigle/.rhinocode/py313-rh9/lib/python3.13/lib-dynload/grp.cpython-313-darwin.so
/Users/kalebseigle/.rhinocode/py313-rh9/lib/python3.13/lib-dynload/zlib.cpython-313-darwin.so
/Users/kalebseigle/.rhinocode/py313-rh9/lib/python3.13/lib-dynload/_bz2.cpython-313-darwin.so
/Users/kalebseigle/.rhinocode/py313-rh9/lib/python3.13/lib-dynload/_lzma.cpython-313-darwin.so
/Users/kalebseigle/.rhinocode/py313-rh9/lib/python3.13/lib-dynload/math.cpython-313-darwin.so
/Users/kalebseigle/.rhinocode/py313-rh9/lib/python3.13/lib-dynload/_bisect.cpython-313-darwin.so
/Users/kalebseigle/.rhinocode/py313-rh9/lib/python3.13/lib-dynload/_random.cpython-313-darwin.so
/Users/kalebseigle/.rhinocode/py313-rh9/lib/python3.13/lib-dynload/_opcode.cpython-313-darwin.so
/Users/kalebseigle/.rhinocode/py313-rh9/lib/python3.13/lib-dynload/_ssl.cpython-313-darwin.so
/Users/kalebseigle/.rhinocode/py313-rh9/libssl.3.dylib
/Users/kalebseigle/.rhinocode/py313-rh9/libcrypto.3.dylib
/Users/kalebseigle/.rhinocode/py313-rh9/lib/python3.13/lib-dynload/_socket.cpython-313-darwin.so
/Users/kalebseigle/.rhinocode/py313-rh9/lib/python3.13/lib-dynload/select.cpython-313-darwin.so
/Users/kalebseigle/.rhinocode/py313-rh9/lib/python3.13/lib-dynload/array.cpython-313-darwin.so
/Users/kalebseigle/.rhinocode/py313-rh9/lib/python3.13/lib-dynload/_struct.cpython-313-darwin.so
/Users/kalebseigle/.rhinocode/py313-rh9/lib/python3.13/lib-dynload/binascii.cpython-313-darwin.so
/Users/kalebseigle/.rhinocode/py313-rh9/lib/python3.13/lib-dynload/_datetime.cpython-313-darwin.so

Rhino plugins that do not ship with Rhino
/Users/kalebseigle/Library/Application Support/McNeel/Rhinoceros/packages/9.0/BlockEditNew/2.1.4/blockeditnew.rhp “BlockEditNew” 2.0.0.0

Rhino plugins that ship with Rhino
/Applications/RhinoWIP.app/Contents/Frameworks/RhMaterialEditor.framework “Renderer Development Kit” 9.0.26084.1002
/Applications/RhinoWIP.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/Commands.rhp “Commands” 9.0.26084.12306
/Applications/RhinoWIP.app/Contents/PlugIns/NamedSnapshots.rhp “Snapshots” 9.0.26084.1002
/Applications/RhinoWIP.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RDK_EtoUI.rhp “RDK_EtoUI” 9.0.26084.12306
/Applications/RhinoWIP.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/MeshCommands.rhp “MeshCommands” 9.0.26084.12306
/Applications/RhinoWIP.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RhinoRenderCycles.rhp “Rhino Render” 9.0.26084.12306
/Applications/RhinoWIP.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RhinoCycles.rhp “RhinoCycles” 9.0.26084.12306
/Applications/RhinoWIP.app/Contents/PlugIns/SectionTools.rhp “SectionTools” 9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/RhinoRender.rhp “Legacy Rhino Render” 9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/Displacement.rhp “Displacement” 9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/import_PDF.rhp “PDFReader” 9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/PanelingTools.rhp “PanelingTools” 9.0.26084.1002
/Applications/RhinoWIP.app/Contents/PlugIns/SolidTools.rhp “SolidTools” 9.0.26084.1002
/Applications/RhinoWIP.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RhinoDLR_Python.rhp “IronPython” 9.0.26084.12306
/Applications/RhinoWIP.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/GrasshopperPlugin.rhp “Grasshopper” 9.0.26084.12306
/Applications/RhinoWIP.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RhinoCodePlugin.rhp “RhinoCodePlugin” 9.0.26084.12306

Thanks.
This looks to have been fixed in in-house builds.
RH-94363 Closing a document on Rhino WIP for Mac is behaving strangely

If all goes well, a new public WIP will go out later today.
-wim

the McNeel dev team is delivering. Thank you