Please review crash report from EPS case.
repro project attached
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[Inlined] UE::Logging::Private::BasicFatalLogV::__l2::<lambda_1>::operator()() StructuredLog.cpp:1708 [Inlined] UE::Logging::Private::BasicFatalLogV(const UE::Logging::Private::FStaticBasicLogRecord &, void *, char *) StructuredLog.cpp:1708 UE::Logging::Private::BasicFatalLog(const UE::Logging::Private::FStaticBasicLogRecord &,const FLogCategoryBase *,...) StructuredLog.cpp:1718 StaticAllocateObjectErrorTests(const UClass *, UObject *, FName, EObjectFlags) UObjectGlobals.cpp:3521 StaticAllocateObject(const UClass *, UObject *, FName, EObjectFlags, EInternalObjectFlags, bool, bool *, UPackage *, int, FRemoteObjectId, FGCReconstructionGuard *) UObjectGlobals.cpp:3674 StaticConstructObject_Internal(const FStaticConstructObjectParameters &) UObjectGlobals.cpp:5038 StaticDuplicateObjectEx(FObjectDuplicationParameters &) UObjectGlobals.cpp:3251 FObjectPropertyBase::ImportText_Internal(const wchar_t *, void *, EPropertyPointerType, UObject *, int, FOutputDevice *) PropertyBaseObject.cpp:478 FObjectProperty::ImportText_Internal(const wchar_t *, void *, EPropertyPointerType, UObject *, int, FOutputDevice *) PropertyObject.cpp:405 FArrayProperty::ImportTextInnerItem(const wchar_t *, const FProperty *, void *, int, UObject *, FScriptArrayHelper *, FOutputDevice *) PropertyArray.cpp:1081 FArrayProperty::ImportText_Internal(const wchar_t *, void *, EPropertyPointerType, UObject *, int, FOutputDevice *) PropertyArray.cpp:1029 PropertyPathHelpersInternal::SetPropertyValueFromString<…>(void *, const FCachedPropertyPath &, const FString &, unsigned int) PropertyPathHelpers.cpp:362 PropertyPathHelpersInternal::TPropertyPathResolver::Resolve(void *, const FCachedPropertyPath &) PropertyPathHelpers.h:681 PropertyPathHelpersInternal::IteratePropertyPathRecursive<…>(UStruct *, void *, int, const FCachedPropertyPath &, PropertyPathHelpersInternal::FPropertyPathResolver &) PropertyPathHelpers.cpp:42 PropertyPathHelpersInternal::IteratePropertyPathRecursive<…>(UStruct *, UObject *, int, const FCachedPropertyPath &, PropertyPathHelpersInternal::FPropertyPathResolver &) PropertyPathHelpers.cpp:98 PropertyPathHelpersInternal::ResolvePropertyPath(UObject *, const FCachedPropertyPath &, PropertyPathHelpersInternal::FPropertyPathResolver &) PropertyPathHelpers.cpp:538 PropertyPathHelpers::SetPropertyValueFromString(UObject *, const FCachedPropertyPath &, const FString &, unsigned int) PropertyPathHelpers.cpp:1259 PropagateDefaultPropertyChange(const FPropertyChangedEvent &, const FEditPropertyChain &, UObject *, UObject *) WidgetBlueprintEditor.cpp:1202 FWidgetBlueprintEditor::MigrateFromChain(const FPropertyChangedEvent *, FEditPropertyChain *, bool) WidgetBlueprintEditor.cpp:1270 SWidgetDetailsView::NotifyPostChange(const FPropertyChangedEvent &, FEditPropertyChain *) SWidgetDetailsView.cpp:675 FPropertyNode::NotifyPostChange(FPropertyChangedEvent &, FNotifyHook *) PropertyNode.cpp:3437 FPropertyValueImpl::AddChild() PropertyHandleImpl.cpp:1433 FPropertyHandleArray::AddItem() PropertyHandleImpl.cpp:5415 FPropertyEditor::OnAddItem() PropertyEditor.cpp:240 [Inlined] Invoke(void (FPropertyEditor::*)(), FPropertyEditor *&) Invoke.h:66 [Inlined] UE::Core::Private::Tuple::TTupleBase::ApplyAfter(void (FPropertyEditor::*&)(), FPropertyEditor *&) Tuple.h:326 TBaseSPMethodDelegateInstance::ExecuteIfSafe() DelegateInstancesImpl.h:325 [Inlined] TDelegate::ExecuteIfBound() DelegateSignatureImpl.inl:631 SDetailsViewBase::Tick(const FGeometry &, const double, const float) SDetailsViewBase.cpp:1281 SWidget::Paint(const FPaintArgs &, const FGeometry &, const FSlateRect &, FSlateWindowElementList &, int, const FWidgetStyle &, bool) SWidget.cpp:1445 SPanel::PaintArrangedChildren(const FPaintArgs &, const FArrangedChildren &, const FGeometry &, const FSlateRect &, FSlateWindowElementList &, int, const FWidgetStyle &, bool) SPanel.cpp:33 SPanel::OnPaint(const FPaintArgs &, const FGeometry &, const FSlateRect &, FSlateWindowElementList &, int, const FWidgetStyle &, bool) SPanel.cpp:15 [...snip...]
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-385946 in the post.