We get a native crash with Noesis 3.2.3 within Unity 2022.3.22f1:

What we're doing:
We have an enum that contains values to differentiate between icons displayed on map after calling mouse click
but in our code we're trying to assign a null value to a variable of this enum type.
It causes the crash in the VisualTreeHelper class of noesis

NullReferenceException: Object reference not set to an instance of an object
at SeapowerUI.ViewModels.MissionEditorViewModel+<>cDisplayClass171_0.<AddGroup>b0 (SeaPower.GeoPosition mousePosition) [0x002a3] in E:\Git\seapower_pf\Assets\Scripts\UI\Main Menu\ViewModels\MissionEditorViewModel.cs:1386
at SeapowerUI.ViewModels.MissionEditorMapViewModel+PlaceGroup.MouseAction (System.Object v, Noesis.RoutedEventArgs args, SeaPower.GeoPosition mousePosition, System.Boolean& handled) [0x0001c] in E:\Git\seapower_pf\Assets\Scripts\UI\Main Menu\ViewModels\MissionEditorMapViewModel.cs:74
at SeapowerUI.ViewModels.InteractionStateBroker+<>cDisplayClass19_0.<HandledEvent>b1 (Noesis.HitTestResult hit) [0x00008] in E:\Git\seapower_pf\Assets\Scripts\UI\Game\ViewModels\InteractionStateBroker.cs:218
at Noesis.VisualTreeHelper.OnHitTestResult (System.IntPtr hitPtr) [0x00002] in .\Packages\NoesisGUI\Runtime\API\Proxies\VisualTreeHelper.cs:95
UnityEngine.DebugLogHandler:Internal_LogException(Exception, Object)
UnityEngine.DebugLogHandler:LogException(Exception, Object)
UnityEngine.Logger:LogException(Exception, Object)
UnityEngine.Debug:LogException(Exception)
NoesisUnity:OnUnhandledException(Exception) (at .\Packages\NoesisGUI\Runtime\NoesisUnity.cs:390)
Noesis.Error:UnhandledException(Exception) (at .\Packages\NoesisGUI\Runtime\API\Core\Error.cs:18)
Noesis.VisualTreeHelper:OnHitTestResult(IntPtr) (at .\Packages\NoesisGUI\Runtime\API\Proxies\VisualTreeHelper.cs:99)
Noesis.VisualTreeHelper:VisualTreeHelper_HitTestCallback(HandleRef, Point&, Callback_HitTestFilter, Callback_HitTestResult)
Noesis.VisualTreeHelper:HitTestCallbackHelper(Visual, Point, Callback_HitTestFilter, Callback_HitTestResult) (at .\Packages\NoesisGUI\Runtime\API\Proxies\VisualTreeHelper.cs:126)
Noesis.VisualTreeHelper:HitTest(Visual, HitTestFilterCallback, HitTestResultCallback, HitTestParameters) (at .\Packages\NoesisGUI\Runtime\API\Proxies\VisualTreeHelper.cs:53)
SeapowerUI.ViewModels.InteractionStateBroker:HandledEvent(Point, RoutedEventArgs) (at Assets\Scripts\UI\Game\ViewModels\InteractionStateBroker.cs:212)
SeapowerUI.ViewModels.InteractionStateBroker:MouseEvent(Object, MouseEventArgs) (at Assets\Scripts\UI\Game\ViewModels\InteractionStateBroker.cs:254)
Noesis.MouseButtonEventArgs:InvokeHandler(Delegate, IntPtr, IntPtr) (at .\Packages\NoesisGUI\Runtime\API\Proxies\MouseButtonEventArgs.cs:50)
Noesis.EventManager:InvokeHandler(IntPtr, Delegate, IntPtr, IntPtr) (at .\Packages\NoesisGUI\Runtime\API\Core\Events.cs:572)
Noesis.EventHandlerStore:RaiseRoutedEvent(IntPtr, IntPtr, IntPtr, IntPtr, IntPtr) (at .\Packages\NoesisGUI\Runtime\API\Core\Events.cs:267)
Noesis.View:Noesis_View_MouseButtonDown(HandleRef, Int32, Int32, Int32)
Noesis.View:MouseButtonDown(Int32, Int32, MouseButton) (at .\Packages\NoesisGUI\Runtime\API\Core\View.cs:214)
NoesisView:ProcessEvent(Event, Boolean, Boolean) (at .\Packages\NoesisGUI\Runtime\NoesisView.cs:1743)
NoesisView:OnGUI() (at .\Packages\NoesisGUI\Runtime\NoesisView.cs:1863)

(Filename: ./Packages/NoesisGUI/Runtime/NoesisUnity.cs Line: 390)

=================================================================
Native Crash Reporting

Got a UNKNOWN while executing native code. This usually indicates
a fatal error in the mono runtime or one of the native libraries
used by your application.

=================================================================
Managed Stacktrace:

  at <unknown> <0xffffffff>
  at Noesis.NoesisGUI_PINVOKE:DrawingContext_DrawGeometry <0x00159>
  at Noesis.DrawingContext:DrawGeometry <0x001e2>
  at MapControl.MapPolyline:OnRender <0x00162>
  at Noesis.Extend:UIElementRender <0x00251>
  at Noesis.Extend:UIElementRender <0x00152>
  at <unknown> <0xffffffff>
  at Noesis.View:Noesis_View_Update <0x0010c>
  at Noesis.View:Update <0x00192>
  at NoesisView:UpdateInternal <0x0062a>
  at NoesisView:LateUpdate <0x000da>
  at System.Object:runtime_invoke_void__this__ <0x00187>

=================================================================
Received signal SIGSEGV
Obtained 47 stack frames
0x00007ff92cee1366 (Noesis) RoutedEventArgs_RoutedEvent_get
0x00000217214af5ba (Mono JIT Code) (wrapper managed-to-native) Noesis.NoesisGUI_PINVOKE:DrawingContext_DrawGeometry (System.Runtime.InteropServices.HandleRef,System.Runtime.InteropServices.HandleRef,System.Runtime.InteropServices.HandleRef,System.Runtime.InteropServices.HandleRef)
0x00000217214af0d3 (Mono JIT Code) Noesis.DrawingContext:DrawGeometry (Noesis.Brush,Noesis.Pen,Noesis.Geometry) (at ./Packages/NoesisGUI/Runtime/API/Proxies/DrawingContext.cs:55)
0x00000217215311c3 (Mono JIT Code) MapControl.MapPolyline:OnRender (Noesis.DrawingContext) (at E:/Git/seapower_pf/Assets/Scripts/Noesis/Components/Controls/Map/MapPolyline.cs:123)
0x0000021721498562 (Mono JIT Code) Noesis.Extend:UIElementRender (intptr,intptr,intptr,Noesis.UIElement/RenderBaseCallback) (at ./Packages/NoesisGUI/Runtime/API/Core/Extend.cs:2217)
0x00000216f168ef83 (Mono JIT Code) (wrapper native-to-managed) Noesis.Extend:UIElementRender (intptr,intptr,intptr,Noesis.UIElement/RenderBaseCallback)
0x00007ff92cffa017 (Noesis) Noesis_RenderDevice_SetRenderTarget
0x00007ff92ceb7dbf (Noesis) Boxed_Thickness_GetStaticType
0x00007ff92cf0d32a (Noesis) QueryContinueDragEventArgs_GetKeyStatesHelper
0x00007ff92cff9ed8 (Noesis) Noesis_RenderDevice_SetRenderTarget
0x00007ff92cf0dc1e (Noesis) QueryContinueDragEventArgs_GetKeyStatesHelper
0x00007ff92cf0d32a (Noesis) QueryContinueDragEventArgs_GetKeyStatesHelper
0x00007ff92cff9ed8 (Noesis) Noesis_RenderDevice_SetRenderTarget
0x00007ff92cfc4cfe (Noesis) Boxed_Point_GetStaticType
0x00007ff92cfc5a2e (Noesis) Boxed_Point_GetStaticType
0x00007ff92cfc403c (Noesis) Boxed_Point_GetStaticType
0x00007ff92cf0d32a (Noesis) QueryContinueDragEventArgs_GetKeyStatesHelper
0x00007ff92cff9ed8 (Noesis) Noesis_RenderDevice_SetRenderTarget
0x00007ff92d008669 (Noesis) DataObjectEventArgs_IsDragDrop_get
0x00007ff92d0084cb (Noesis) DataObjectEventArgs_IsDragDrop_get
0x00007ff92d006b53 (Noesis) Noesis_RenderDevice_SetRenderTarget
0x000002171c6dedfd (Mono JIT Code) (wrapper managed-to-native) Noesis.View:Noesis_View_Update (System.Runtime.InteropServices.HandleRef,double)
0x000002171c6d81b3 (Mono JIT Code) Noesis.View:Update (double) (at ./Packages/NoesisGUI/Runtime/API/Core/View.cs:379)
0x000002171c6d1fbb (Mono JIT Code) NoesisView:UpdateInternal () (at ./Packages/NoesisGUI/Runtime/NoesisView.cs:1508)
0x000002171c6d18eb (Mono JIT Code) NoesisView:LateUpdate () (at ./Packages/NoesisGUI/Runtime/NoesisView.cs:1409)
0x00000215fa4038a8 (Mono JIT Code) (wrapper runtime-invoke) object:runtime_invoke_voidthis (object,intptr,intptr,intptr)
0x00007ff9031b4c1e (mono-2.0-bdwgc) mono_jit_runtime_invoke (at C:/build/output/Unity-Technologies/mono/mono/mini/mini-runtime.c:3445)
0x00007ff9030ed254 (mono-2.0-bdwgc) do_runtime_invoke (at C:/build/output/Unity-Technologies/mono/mono/metadata/object.c:3068)
0x00007ff9030ed3cc (mono-2.0-bdwgc) mono_runtime_invoke (at C:/build/output/Unity-Technologies/mono/mono/metadata/object.c:3115)
0x00007ff72e030c44 (Unity) scripting_method_invoke
0x00007ff72e00e9b4 (Unity) ScriptingInvocation::Invoke
0x00007ff72dff61a4 (Unity) MonoBehaviour::CallMethodIfAvailable
0x00007ff72dff62ca (Unity) MonoBehaviour::CallUpdateMethod
0x00007ff72da8963b (Unity) BaseBehaviourManager::CommonUpdate<LateBehaviourManager>
0x00007ff72da90a0a (Unity) LateBehaviourManager::Update
0x00007ff72dcc570d (Unity) InitPlayerLoopCallbacks'::2'::PreLateUpdateScriptRunBehaviourLateUpdateRegistrator::Forward
0x00007ff72dca4a3c (Unity) ExecutePlayerLoop
0x00007ff72dca4bb0 (Unity) ExecutePlayerLoop
0x00007ff72dcab445 (Unity) PlayerLoop
0x00007ff72ec789ef (Unity) PlayerLoopController::InternalUpdateScene
0x00007ff72ec8581d (Unity) PlayerLoopController::UpdateSceneIfNeededFromMainLoop
0x00007ff72ec83b01 (Unity) Application::TickTimer
0x00007ff72f0fe67a (Unity) MainMessageLoop
0x00007ff72f103550 (Unity) WinMain
0x00007ff7304e594e (Unity) __scrt_common_main_seh
0x00007ff96eea7344 (KERNEL32) BaseThreadInitThunk
0x00007ff9707426b1 (ntdll) RtlUserThreadStart