Unreal Engine Issues
Unreal Engine Issues
Static mesh's material slot's cast shadow does not require a build of StaticLight
UE - Graphics Features - Dec 7, 2017If static mesh's material slot's cast shadow is changed, UE4 does not show "LIGHTING NEEDS TO BE REBUILT". I solved it with the following fixes. StaticMeshEditorTools.cpp void FMeshSectionSettin ...
Cannot run any packaged project if "Force all skinned meshes to recompute tangents" has been enabled in an unrelated project
UE - Foundation - Core - Apr 20, 2018Enabling the "Force all skinned meshes to recompute tangents" sets the value at a Windows user level so that it affects all UE4 projects opened by that user, including unrelated packaged projects. T ...
Unnecessary files in Perforce Depot
Several unnecessary files seem to have found their way into the Perforce depot and need to be cleaned up. Affected files:Engine/Documentation/Source/Engine/Matinee/HowTo/MHT_3/Images/MHT#_Drag_In_C ...
Foliage experiences odd culling when world origin is changed
UE - Graphics Features - Sep 13, 2017There is an odd issue occurring when the world origin is changed, changing the world origin causes the foliage to cull in unexpectred ways. The issue can be solved by using the console command "r.Al ...
[CrashReport] UE4Editor_Foliage!AInstancedFoliageActor::PreEditUndo() [instancedfoliage.cpp:2296]
UE - World Creation - Worldbuilding Tools - Foliage - Dec 1, 2017This is a common 4.18 crash. Users have not provided any description of their actions when the crash occurred. Source Context 2286 void AInstancedFoliageActor::PreEditUndo() 2287 { ...
Buffer Visualization Modes Are Inaccurate
UE - Graphics Features - Apr 19, 2018In 4.18, Buffer Visualization Modes appear very similar to their representation in Buffer Overview. In 4.19 and Main (CL 4008322) the results are very blown out. Similar issue reported in [Link Remo ...
Complex collision mesh might lose its collision in the editor
UE - LD & Modeling - Modeling Tools - Mesh Editing - Feb 18, 2020This is affected by loading order. In the case, display mesh was loaded firstly and try to build collision mesh form complex collision mesh asset. But the collision mesh didn't finished to make Ren ...
Enabling bUpdateComponentTransformToRootBone in a GeometryCollectionComponent causes broken particles to appear in the wrong location
UE - Simulation - Physics - Destruction - Jun 22, 2025Enabling bUpdateComponentTransformToRootBone in a GeometryCollectionComponent causes broken particles to appear in the wrong location. When that flag is true, the moment the GeometryCollection (GC) ...
This user's project presents an Engine/Transient save error on certain Blueprints
UE - Gameplay - Blueprint - Apr 10, 2015This user's project presents an Engine/Transient save error on certain Blueprints. When saving the CharmState Blueprint, this message pops up: Can't save ../../../../../UserProjects/jeffvoight_ciic ...
Steam Overlay does not show in Win64 Shipping builds when run outside of Steam
UE - Networking - Nov 11, 2015Steam Overlay does not show in Win64 Shipping builds when run outside of Steam. The Steam client can be running, but unless the .exe is opened through Steam itself, the Overlay will not appear. Note ...