Unreal Engine Issues

UE-290822

Crash when two textures reference eachother as composite textures

Crash when two textures reference eachother as composite textures

Description

When (unintentionally) trying to set one texture as the composite texture of another, which itself is the composite texture of the first, a stack overflow occurs leading to a crash: in UTexture::PostEditChangeProperty, texture A calls PostEditChange() on all textures that reference it (texture B in this case), which in turn will call PostEditChange() on texture A, creating an infinite loop.

Steps to Reproduce
  • Create 2 textures in the editor (for example by duplicating existing textures) and call them A and B.
  • Open texture A and set texture B as the composite texture. Select one of the composition modes that is not disabled.
  • When doing the same for texture B (i.e. setting texture A as composite texture), it should crash with a stack overflow.
Callstack

UnrealEditor-Core.dll!FNameHelper::FindOrStoreString(FNameStringView View, EFindName FindType) Line 3191
UnrealEditor-Core.dll!FNameHelper::MakeWithNumber(const FWideStringViewWithWidth View, EFindName FindType, int InternalNumber) Line 2994
[Inline Frame] UnrealEditor-Core.dll!FNameHelper::MakeDetectNumber(FWideStringViewWithWidth) Line 2935
UnrealEditor-Core.dll!FName::FName(int Len, const wchar_t * Name, EFindName FindType) Line 3368
[Inline Frame] UnrealEditor-ContentBrowserData.dll!FName::

{ctor}

(TStringView<wchar_t>) Line 988
UnrealEditor-ContentBrowserData.dll!UContentBrowserDataSource::TryConvertInternalPathToVirtual(const FName InInternalPath, FName & OutPath) Line 152
UnrealEditor-ContentBrowserAssetDataSource.dll!UContentBrowserAssetDataSource::CreateAssetFileItem(const FAssetData & InAssetData) Line 3172
UnrealEditor-ContentBrowserAssetDataSource.dll!UContentBrowserAssetDataSource::OnObjectPropertyChanged(UObject * InObject, FPropertyChangedEvent & InPropertyChangedEvent) Line 3325
[Inline Frame] UnrealEditor-ContentBrowserAssetDataSource.dll!Invoke(void(UContentBrowserAssetDataSource::*)(UObject *, FPropertyChangedEvent &)) Line 66
[Inline Frame] UnrealEditor-ContentBrowserAssetDataSource.dll!UE::Core::Private::Tuple::TTupleBase<TIntegerSequence<unsigned int>>::ApplyAfter(void(UContentBrowserAssetDataSource::*)(UObject *, FPropertyChangedEvent &) &) Line 317
UnrealEditor-ContentBrowserAssetDataSource.dll!V::TBaseUObjectMethodDelegateInstance::ExecuteIfSafe(UObject * <Params_0>, FPropertyChangedEvent & <Params_1>) Line 667
[Inline Frame] UnrealEditor-CoreUObject.dll!TMulticastDelegateBase<FDefaultDelegateUserPolicy>::Broadcast(UObject *) Line 257
[Inline Frame] UnrealEditor-CoreUObject.dll!TMulticastDelegate<void __cdecl(UObject *,FPropertyChangedEvent &),FDefaultDelegateUserPolicy>::Broadcast(UObject *) Line 1079
UnrealEditor-CoreUObject.dll!UObject::PostEditChangeProperty(FPropertyChangedEvent & PropertyChangedEvent) Line 467
UnrealEditor-Engine.dll!UTexture::PostEditChangeProperty(FPropertyChangedEvent & PropertyChangedEvent) Line 803
UnrealEditor-CoreUObject.dll!UObject::PostEditChange() Line 461
UnrealEditor-Engine.dll!UTexture::PostEditChangeProperty(FPropertyChangedEvent & PropertyChangedEvent) Line 983
UnrealEditor-CoreUObject.dll!UObject::PostEditChange() Line 461
UnrealEditor-Engine.dll!UTexture::PostEditChangeProperty(FPropertyChangedEvent & PropertyChangedEvent) Line 983
UnrealEditor-CoreUObject.dll!UObject::PostEditChange() Line 461
UnrealEditor-Engine.dll!UTexture::PostEditChangeProperty(FPropertyChangedEvent & PropertyChangedEvent) Line 983
UnrealEditor-CoreUObject.dll!UObject::PostEditChange() Line 461
UnrealEditor-Engine.dll!UTexture::PostEditChangeProperty(FPropertyChangedEvent & PropertyChangedEvent) Line 983
UnrealEditor-CoreUObject.dll!UObject::PostEditChange() Line 461
UnrealEditor-Engine.dll!UTexture::PostEditChangeProperty(FPropertyChangedEvent & PropertyChangedEvent) Line 983
UnrealEditor-CoreUObject.dll!UObject::PostEditChange() Line 461
UnrealEditor-Engine.dll!UTexture::PostEditChangeProperty(FPropertyChangedEvent & PropertyChangedEvent) Line 983
UnrealEditor-CoreUObject.dll!UObject::PostEditChange() Line 461
UnrealEditor-Engine.dll!UTexture::PostEditChangeProperty(FPropertyChangedEvent & PropertyChangedEvent) Line 983
UnrealEditor-CoreUObject.dll!UObject::PostEditChange() Line 461
UnrealEditor-Engine.dll!UTexture::PostEditChangeProperty(FPropertyChangedEvent & PropertyChangedEvent) Line 983
UnrealEditor-CoreUObject.dll!UObject::PostEditChange() Line 461
UnrealEditor-Engine.dll!UTexture::PostEditChangeProperty(FPropertyChangedEvent & PropertyChangedEvent) Line 983
UnrealEditor-CoreUObject.dll!UObject::PostEditChange() Line 461
UnrealEditor-Engine.dll!UTexture::PostEditChangeProperty(FPropertyChangedEvent & PropertyChangedEvent) Line 983
UnrealEditor-CoreUObject.dll!UObject::PostEditChange() Line 461
UnrealEditor-Engine.dll!UTexture::PostEditChangeProperty(FPropertyChangedEvent & PropertyChangedEvent) Line 983
UnrealEditor-CoreUObject.dll!UObject::PostEditChange() Line 461
UnrealEditor-Engine.dll!UTexture::PostEditChangeProperty(FPropertyChangedEvent & PropertyChangedEvent) Line 983
UnrealEditor-CoreUObject.dll!UObject::PostEditChange() Line 461
UnrealEditor-Engine.dll!UTexture::PostEditChangeProperty(FPropertyChangedEvent & PropertyChangedEvent) Line 983
UnrealEditor-CoreUObject.dll!UObject::PostEditChange() Line 461
UnrealEditor-Engine.dll!UTexture::PostEditChangeProperty(FPropertyChangedEvent & PropertyChangedEvent) Line 983
UnrealEditor-CoreUObject.dll!UObject::PostEditChange() Line 461
UnrealEditor-Engine.dll!UTexture::PostEditChangeProperty(FPropertyChangedEvent & PropertyChangedEvent) Line 983
UnrealEditor-CoreUObject.dll!UObject::PostEditChange() Line 461
UnrealEditor-Engine.dll!UTexture::PostEditChangeProperty(FPropertyChangedEvent & PropertyChangedEvent) Line 983
UnrealEditor-CoreUObject.dll!UObject::PostEditChange() Line 461
UnrealEditor-Engine.dll!UTexture::PostEditChangeProperty(FPropertyChangedEvent & PropertyChangedEvent) Line 983
UnrealEditor-CoreUObject.dll!UObject::PostEditChange() Line 461
UnrealEditor-Engine.dll!UTexture::PostEditChangeProperty(FPropertyChangedEvent & PropertyChangedEvent) Line 983
UnrealEditor-CoreUObject.dll!UObject::PostEditChange() Line 461
UnrealEditor-Engine.dll!UTexture::PostEditChangeProperty(FPropertyChangedEvent & PropertyChangedEvent) Line 983
UnrealEditor-CoreUObject.dll!UObject::PostEditChange() Line 461
UnrealEditor-Engine.dll!UTexture::PostEditChangeProperty(FPropertyChangedEvent & PropertyChangedEvent) Line 983
UnrealEditor-CoreUObject.dll!UObject::PostEditChange() Line 461
UnrealEditor-Engine.dll!UTexture::PostEditChangeProperty(FPropertyChangedEvent & PropertyChangedEvent) Line 983
UnrealEditor-CoreUObject.dll!UObject::PostEditChange() Line 461
UnrealEditor-Engine.dll!UTexture::PostEditChangeProperty(FPropertyChangedEvent & PropertyChangedEvent) Line 983
UnrealEditor-CoreUObject.dll!UObject::PostEditChange() Line 461
UnrealEditor-Engine.dll!UTexture::PostEditChangeProperty(FPropertyChangedEvent & PropertyChangedEvent) Line 983
UnrealEditor-CoreUObject.dll!UObject::PostEditChange() Line 461
UnrealEditor-Engine.dll!UTexture::PostEditChangeProperty(FPropertyChangedEvent & PropertyChangedEvent) Line 983
UnrealEditor-CoreUObject.dll!UObject::PostEditChange() Line 461
UnrealEditor-Engine.dll!UTexture::PostEditChangeProperty(FPropertyChangedEvent & PropertyChangedEvent) Line 983
UnrealEditor-CoreUObject.dll!UObject::PostEditChange() Line 461
UnrealEditor-Engine.dll!UTexture::PostEditChangeProperty(FPropertyChangedEvent & PropertyChangedEvent) Line 983
UnrealEditor-CoreUObject.dll!UObject::PostEditChange() Line 461
UnrealEditor-Engine.dll!UTexture::PostEditChangeProperty(FPropertyChangedEvent & PropertyChangedEvent) Line 983
UnrealEditor-CoreUObject.dll!UObject::PostEditChange() Line 461
UnrealEditor-Engine.dll!UTexture::PostEditChangeProperty(FPropertyChangedEvent & PropertyChangedEvent) Line 983
UnrealEditor-CoreUObject.dll!UObject::PostEditChange() Line 461
UnrealEditor-Engine.dll!UTexture::PostEditChangeProperty(FPropertyChangedEvent & PropertyChangedEvent) Line 983
UnrealEditor-CoreUObject.dll!UObject::PostEditChange() Line 461
UnrealEditor-Engine.dll!UTexture::PostEditChangeProperty(FPropertyChangedEvent & PropertyChangedEvent) Line 983
UnrealEditor-CoreUObject.dll!UObject::PostEditChange() Line 461
UnrealEditor-Engine.dll!UTexture::PostEditChangeProperty(FPropertyChangedEvent & PropertyChangedEvent) Line 983
UnrealEditor-CoreUObject.dll!UObject::PostEditChange() Line 461
UnrealEditor-Engine.dll!UTexture::PostEditChangeProperty(FPropertyChangedEvent & PropertyChangedEvent) Line 983
UnrealEditor-CoreUObject.dll!UObject::PostEditChange() Line 461
UnrealEditor-Engine.dll!UTexture::PostEditChangeProperty(FPropertyChangedEvent & PropertyChangedEvent) Line 983
UnrealEditor-CoreUObject.dll!UObject::PostEditChange() Line 461
UnrealEditor-Engine.dll!UTexture::PostEditChangeProperty(FPropertyChangedEvent & PropertyChangedEvent) Line 983
UnrealEditor-CoreUObject.dll!UObject::PostEditChange() Line 461

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Fixed
ComponentUE - Texture
Affects Versions5.5
Target Fix5.7
Fix Commit43555457
CreatedMay 28, 2025
ResolvedJun 16, 2025
UpdatedJun 19, 2025
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