Unreal Engine Issues
Unreal Engine Issues
FMatrix::ErrorEnsure(const TCHAR* Message) doesn't output TCHAR parameter
UE - Foundation - Core - Oct 30, 2019FMatrix::ErrorEnsure(const TCHAR* Message) doesn't output the message passed to it. Found in 4.23 CL#9631420 Reproduced in 4.22.3 CL#7053642, 4.24.0 CL#9892386, 4.25 Main CL#9892271 ...
Material Instance Parameters Undo Doesn't Update Values
Tools - Dec 11, 2019Material Instance parameters do not update values when the user does an Undo (Ctrl+Z). An example project is attached. This seem related to [Link Removed]. Found in 4.24 CL#10570792 Reproduced in ...
Switching AnimLayer to child AnimBP doesn't trigger inertial blending
OLD - Anim - Jun 19, 2020At compile time, BlendOptions array which contains BlendTime setting are created. These are copied from its own interfaces, not the parent's. The blending works fine if the parent's interface is als ...
Distance Cull Fade Node on Material does not work with Skeletal Mesh
UE - Rendering - Architecture - Materials - Apr 22, 2022The licensee reports that this issue is caused by the following code not performing a Buffer update. .\Engine\Source\Runtime\Renderer\Private\ShaderBaseClasses.cpp void FMeshMaterialShaderElementD ...
Auto-creation of SmartObjectCollection is often undesired
UE - AI - SmartObject - Nov 2, 2022Right now whenever a new world is created in the editor we automatically spawn a SmartObjectCollection actor for it, regardless of whether there are SmartObjects on the map. The SmartObjectCollectio ...
Enhanced Input Action Key Remapping maps old mapping over incoming mapping in an unintuitive way
UE - Gameplay - Input - Mar 7, 2024On EnhancedInputSubsystemInterface.cpp:1040, RebuildControlMappings has a check to preserve mappings for identical action key maps. In most cases, this appears to work correctly; however, in the cas ...
Crash when searching for a string with the same name as the collection
UE - Editor - Workflow Systems - Feb 28, 2025The editor crashes when creating a local collection of the same name by typing certain characters in the search box of the content browser. This does not reproduce in UE5.4 and is a regression in UE ...
Cannot Preview a Node in a UI Material
UE - Rendering - Architecture - Materials - Mar 18, 2016Previewing a Node in a UI Material will not show anything, or will remain showing what is placed in Final Color. This issue appears to be fixed in Dev-Main as of CL-2914624. ...
Creating an asset with the same prefix as another cancels name change process
UE - Platform - Linux - Apr 9, 2015When creating an asset, if the beginning of the name is the same as the full name or another asset it will cancel the process Workaround: Adding a change (such as "X") to the beginning of the seco ...
Physics actor attached during runtime doesn't have proper collision
UE - Gameplay - Oct 14, 2015Physics actor attached during runtime doesn't have proper collision User Description: It seems that the "Weld Simulated Bodies" option on the AttachToActor function (same with AttachActorToActor) ...