Unreal Engine Issues
Unreal Engine Issues
SetOneWayInteraction functionality has no effect on the simulation
UE - Simulation - Physics - Nov 11, 2022Calling SetOneWayInteraction on a BodyInstance has no effect within the physics engine. The state of the flag is passed in to Chaos but nothing actually uses the value once it is there. It is expe ...
Planar Reflections distorted if Separate Translucency Screen Percentage less than 100%
UE - Graphics Features - Aug 19, 2020Planar reflections with any value lower than 100 for SeparateTranslucencyScreenPercentage are skewed/distorted when moving the camera, not representing the correct image when the value is 100. ...
Black viewport with artifacting when changing to MSAA with Forward Shading enabled
UE - Graphics Features - Dec 2, 2020DID NOT OCCUR IN BP FPS PROJECT - might be ContentExamples specific This issue does not occur when forward shading is disabled. Viewport error reads: TOO MANY OVERLAPPING SHADOWED MOVABLE LIGHTS ...
Issues with Convert Selected Actor to Blueprint Class (previously Replace with Composited Blueprint)
UE - Gameplay - Blueprint - May 14, 2015A licensee on UDN brought up some issues with "Convert Selected Components to Blueprint Class". After investigating a bit, it seems there's been some regression compared to what could be done with " ...
Integer overflow in NaniteBuilder can lead to an editor crash on certain meshes
UE - Graphics Features - Nanite - Jul 10, 2024NaniteBuilder uses an int8 type for ExternalEdges and counts adjacency with a int32. The bug stems for the cast to int8 when adding the adjacency count into the ExternalEdges array. The precision l ...
Moving objects in editor does not update collision
UE - Gameplay - Apr 7, 2015When an object is created procedurally with code and placed into the editor the collision analyzer will detect the object properly. If the object is then moved to another part of the level the coll ...
Blueprint inheritance can cause dangling references to stale UProperties across compiles
UE - Gameplay - Blueprint Compiler - Jun 6, 2017A number of places in the code rely on raw UProperty pointers to track properties they care about. This can present issues when BPs inherit from other BPs, because the parent's class may be Purged / ...
[CrashReport] UE4Editor_Renderer!FSceneRenderer::CreateWholeSceneProjectedShadow() [shadowsetup.cpp:1978]
UE - Graphics Features - Oct 2, 2017This is a trending crash coming out of the 4.18 Previews. Users have not provided any descriptions of their actions when the crash occurred. Source Context 1964 // Determine the amount o ...
GPU / D3d Crash while editing Landscapes
UE - Graphics Tools - Terrain - Landscape - Mar 7, 2023From licensee: I've been experiencing consistent GPU crashes when tying to edit landscapes since updating to UE5.1. It seems to be exclusively an issue with DirectX 12 (SM5 & SM6). I have no pro ...
Modifying FinstancedStruct (Blueprint structs) properties inside another FInstancedStruct triggers an ensure and properties do not get saved.
UE - AI - Dec 16, 2024There is a bug with Blueprint structs having FInstancedStruct as a property. If you modify the DefaultValues of any property of an FInstancedStruct inside the blueprint struct asset, an ensure will ...