Unreal Engine Issues
Unreal Engine Issues
ISM Component in an instanced BP does not take into account changes to NumCustomDataFloats from the BP class
UE - Graphics Features - Sep 16, 2022PerInstanceSMCustomData is bulk serialized and doesn't get changed on the BP instance when changing NumCustomDataFloats, possibly causing out of bounds array access leading to a crash. Possible sol ...
Dormancy validation log warnings when COND_Never property changes
UE - Networking - Jun 2, 2023FRepLayout::DiffProperties doesn't check if the property's conditions is COND_Never or if the Parent Cmd's flags have the ERepParentFlags::IsLifetime flag (which FRepLayout::InitFromClass doesn't se ...
WatchEnumProperty() node failing to find Enum property in tool property set
UE - Graphics Tools - Modeling Tools - GeometryScripting - Oct 5, 2023Within a UEditorScriptableClickDragTool tool, when attempting to watch the changes of an UENUM property using WatchEnumProperty() node, the property will never be able to be found during FindValid ...
Nanite static mesh is still visible even if "Render in main pass" or "Render in depth pass" is used
UE - Rendering Architecture - Jan 18, 2024OBJ file imports with wrong scale and orientation.
TM - Interoperability - Jun 14, 2024I've also attached an FBX of the same mesh for reference. [Link Removed] [Image Removed] ...
Metdata 'ForceAsFunction' does not prevent conversion to event
UE - Framework - Blueprint Editor - Mar 6, 2025Quote from the UDN: This is easily fixed with a conditional in bool FBlueprintEditor::ConvertFunctionIfValid(UK2Node_FunctionEntry* FuncEntryNode) which we've done locally, but should probably be ...
PIE Seamless Travel with a standalone level instance causes assert in UWorldPartition::BeginDestroy
UE - World Creation - Worldbuilding Tools - Level Instances - May 8, 2025This check is hit on the server instance while it is performing garbage collection during the seamless travel. During this garbage collection, it will determine that the UWorldPartition object belon ...
BSPs do not update when converted to blocking volumes
UE - LD & Modeling - Modeling Tools - BSP - Oct 21, 2015If a bsp is converted to a blocking volume, the faces of the bsp remain present until a new actor is placed or geometry is compiled. ...
Landscape materials do not correctly render on iPhone 5S with version 8.3 installed
UE - Graphics Features - Jun 17, 2015[JoshA] This is a bug in the Metal renderer. Basing on the screenshots in the Comments, it looks like some sort of precision issue in Metal shaders? Landscape materials incorrectly render when depl ...
Line traces don't consistently trigger when colliding between landscape components
UE - Simulation - Physics - Mar 15, 2015Landscapes do not consistently return "hit" on traces. Lots of AH posts on this topic, and votes on public tracker: [Link Removed] ...