Unreal Engine Issues
Unreal Engine Issues
Crash in FMaterialUtilities::CreateFlattenMaterialInstance when building Simplified HLOD layer
UE - World Creation - Worldbuilding Tools - HLOD - Aug 17, 2022From licensee: The issue here starts in FVoxelizeMeshMerging::ProxyLOD() where the FlattenMaterial created using FMaterialUtilities::CreateFlattenMaterialWithSettings() returns an empty struct. I d ...
Crash opening a structure with a circular reference
UE - Gameplay - Blueprint - Oct 23, 2017Typically users are unable to select a structs that reference each other but I was able to find a way around this by manipulating the Do Not Save functionality when closing the editor. Not a regres ...
Instanced MovieSceneEventParameters does not save updated values upon level load
UE - Anim - Sequencer - Jun 24, 2019Any instanced Actor with a public MovieSceneEventParameter struct doesn't retain any altered values on level load. Found in 4.22 CL#7053642 Reproduced in 4.21 CL#4753647 , 4.24 Main CL#7173985 ...
Crash While Compiling Blueprint in FBlueprintEditorUtils::RefreshExternalBlueprintDependencyNodes()
UE - Gameplay - Blueprint - Jun 7, 2016Having an actor blueprint (A) that contains an array variable of references to another actor (B) that is connected to a Length node and a Vector array that is connected to a ForEachLoop causes bluep ...
User-instanced subobjects owned by a streaming sublevel's Blueprint CDO cannot be garbage collected with the owning world after the sublevel has been reloaded in the editor.
UE - Gameplay - Blueprint - Feb 5, 2020Strong object reference properties of an 'EditInline'-decorated UCLASS type embedded within a native C++ struct definition can be instanced at edit time by the user as part of a variable's default v ...
Data Asset Deserialization crash after upgrading 4.19.2 to 421.1
UE - Foundation - Core - Feb 7, 2019The User has provided an extensive log of their code base setup, and the process leading up to when the Assert occurs. "Our game mode & player state FSM are setup in a data driven manor using UDa ...
DataTable CSV export; First member of Array not exported if set to default value
UE - Gameplay - Blueprint Editor - Mar 26, 2018When using a struct as a type for TArray and first element of the array has first member variable of the struct set to default, it is not exported to *.csv ...
Undo deleting a Set or Map member variable will add it back to datatable in reverse order if it was changed
UE - Gameplay - Jan 9, 2018When undoing the deleting of a struct set or map variable, the order of the entries will be reverse in any datatable that's based on the struct. This only occurs if the entries have been modified i ...
FDateRange cannot be declared as UPROPERTY
UE - CoreTech - UObject - Sep 4, 2024Unlike other range wrapper structs, such as FFloatRange, marking a FDateRange as a UPROPERTY results in the following error: error : Unable to find 'class', 'delegate', 'enum', or 'struct' with nam ...
Custom structure in blueprint corrupts Project
UE - Gameplay - Blueprint - Feb 12, 2015Adding a custom Struct appears to crash the user project (possibly circular reference issue ) ...