Rhino 7 (MAC) -- Bug Report // Geometry (Objects) desappeared + Crashes every time browsing (Revert to) previous version

Hello, Bug report, description as in the title.

Saved my file yesterday night, opened it again today, bunch of curves/surfaces are gone.
Tried to browse back to previous version using the Revert To method, Rhino 7 MAC crashes everytime.

System Report:
Rhino 7 SR4 2021-3-19 (Rhino 7, 7.4.21078.01002, Git hash:master @ a432d22ab7f0f7b53d157d578278070c8bf6eff4)
License type: Educational, build 2021-03-19
License details: Cloud Zoo

Apple Intel 64-bit macOS Version 10.14.6 (Build 18G8022) (Physical RAM: 32Gb)
Mac Model Identifier: MacBookPro15,1
Language: en-JP (MacOS default)

AMD Radeon Pro 560X OpenGL Engine (OpenGL ver:4.1 ATI-2.11.23)

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: High

Vendor Name: ATI Technologies Inc.
Render version: 4.1
Shading Language: 4.10
Maximum Texture size: 16384 x 16384
Z-Buffer depth: n/a
Maximum Viewport size: 16384 x 16384
Total Video Memory: 4 GB
Graphics: Radeon Pro 560X
Displays: Color LCD (258dpi 2x), HP Z23n G2 (96dpi 1x)

Graphics processors
Intel UHD Graphics 630 (1536 MB)
Radeon Pro 560X (4 GB)
Color LCD (1680 x 1050)
HP Z23n G2 (1920 x 1080 @ 60 Hz)

USB devices
MOSART Semi.: 2.4G Wireless Mouse
Apple Inc.: USB-C Digital AV Multiport Adapter
Apple Inc.: USB3.0 Hub
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
Broadcom: Magic Keyboard

Third party kernel extensions
None

Third party plugins
/usr/lib/log/liblog_network.dylib

Rhino plugins that do not ship with Rhino
/Users/ghalibouayad/Library/Application Support/McNeel/Rhinoceros/packages/7.0/AMDDenoiser/0.4.1/AMDDenoiser.Mac.rhp “AMDDenoiser.Mac” 1.0.0.0

Rhino plugins that ship with Rhino
/Applications/Rhino 7.app/Contents/PlugIns/NamedSnapshots.rhp “Snapshots” 7.4.21078.1002
/Applications/Rhino 7.app/Contents/PlugIns/PanelingTools.rhp “PanelingTools” 7.4.21078.1002
/Applications/Rhino 7.app/Contents/Frameworks/RhMaterialEditor.framework “Renderer Development Kit” 7.4.21078.1002
/Applications/Rhino 7.app/Contents/PlugIns/Displacement.rhp “Displacement” 7.4.21078.1002
/Applications/Rhino 7.app/Contents/PlugIns/RhinoRender.rhp “Legacy Rhino Render” 7.4.21078.1002
/Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/Commands.rhp “Commands” 7.4.21078.1002
/Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/Import_OBJ.rhp “Import_OBJ” 7.4.21078.1002
/Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/export_XAML.rhp “export_xaml” 7.4.21078.1002
/Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/QuadRemesh.rhp “QuadRemesh” 7.4.21078.1002
/Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/Export_OBJ.rhp “export_OBJ” 7.4.21078.1002
/Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RDK_EtoUI.rhp “RDK_EtoUI” 7.4.21078.1002
/Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/export_SVG.rhp “Export SVG” 7.4.21078.1002
/Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/MeshCommands.rhp “MeshCommands” 7.4.21078.1002
/Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/Export_DAE.rhp “Export_DAE” 7.4.21078.1002
/Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/export_PDF.rhp “PDF Export” 7.4.21078.1002
/Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/export_IGES.rhp “IGES Export Plug-in” 7.4.21078.1002
/Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/Import_SVG.rhp “Import_SVG” 7.4.21078.1002
/Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/BlockEdit.rhp “BlockEdit” 7.4.21078.1002
/Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/Export_AMF.rhp “Export_AMF” 7.4.21078.1002
/Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RhinoRenderCycles.rhp “Rhino Render” 7.4.21078.1002
/Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/import_DST.rhp “Import_DST” 7.4.21078.1002
/Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/export_PLY.rhp “PLY - Polygon File Format Export” 7.4.21078.1002
/Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/Import_AMF.rhp “Import_AMF” 7.4.21078.1002
/Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RhinoCycles.rhp “RhinoCycles” 7.4.21078.1002
/Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RhinoDLR_Python.rhp “IronPython” 7.4.21078.1002
/Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/GrasshopperPlugin.rhp “Grasshopper” 7.4.21078.1002