Unreal Engine Issues
Unreal Engine Issues
BuildGraph build fails if Use Unity Build and Use PCH Files are set to false in BuildConfiguration.xml
UE - Online - Jun 23, 2017Using BuildGraph to create a local binary build of the engine fails if the BuildConfiguration.xml file has bUseUnityBuild and bUsePCHFiles both set to false. The build fails due to some missing Json ...
Inaccurate motion vectors when using different position binding in renderer
UE - Niagara - Rendering - Jul 27, 2023Even though the particles are not moving, and the velocity is zero, the output motion vectors are non-zero. This seems to only happen if using two sources of particle positions. ...
Exponential Editor Slate Performance Cost When Editing An Asset With Nested Instanced Structs
UE - Editor - Workflow Systems - Feb 20, 2024UDN Issue: [Link Removed] ...
Replicating a non-root component with simulate physics enabled causes the component to be in the wrong place on spawn, on clients.
UE - Simulation - Physics - Jan 20, 2025When a BP spawns another, if the spawned Actor has a non-root child component that is simulating physics, on clients, immediately after spawn, the child component will have the world position double ...
User's editor crashes when using a certain EditorLayout.ini
UE - Editor - UI Systems - Slate - Feb 16, 2016The users editor crashes on open when changing the layout ...
Sequencer based Camera Shake throws an assertion when spammed
UE - Anim - Sequencer - Apr 7, 2022Activating a Sequencer based Camera Shake repetitively results in an assertion being thrown. Assertion failed: DestAllocationIndex != SourceAllocationIndex [File:D:\build\++UE5\Sync\Engine\Source\R ...
Blueprint Node "Get Actors" for Layers in Level Blueprint causes crash in Packaged .exe
UE - Virtual Production - Nov 21, 2019Blueprint Node "Get Actors" for Layers in Level Blueprint causes crash in Packaged .exe The Blueprint node "Get Actors" for Layers in the Level Blueprint causes an instant crash in a built developm ...
Crash in UEditorEngine::ToggleBetweenPIEandSIE when ejecting from Play In Editor while starting a multiplayer session
Tools - Aug 24, 2020UE4Editor crashes when we eject from a Play In Editor session while starting a multiplayer session. ...
Error Saving Project When Adding an "InstancedStaticMeshComponent" to A Static Mesh Actor Blueprint
UE - Gameplay - Blueprint - Mar 8, 2016When trying to Save a Project after Adding an "InstancedStaticMeshComponent" to A Static Mesh Actor Blueprint, user experiences an Error Message: “…Graph is linked to private object(s) in an extern ...
[CrashReport] UE4Editor_UnrealEd!TSet<FEditorUndoClient * __ptr64,DefaultKeyFuncs<FEditorUndoClient * __ptr64,0>,FDefaultSetAllocator>::Remove() [set.h:685]
UE - Anim - Sequencer - Aug 15, 2017This is a trending crash coming out of the 4.17.0 release. Users have not provided any descriptions of their actions when the crash occurred. Source Context 675 /** 676 * Remov ...