Unreal Engine Issues
Unreal Engine Issues
Instanced meshes do not accurately use volume light samples when lit in a statically lit scene
UE - Graphics Features - Aug 14, 2015When using instanced meshes in a Blueprint or in foliage tool the indirect lighting cache will not correctly light these meshes. I've include a sample project with map to demonstrate what the lice ...
Viewport Flickers when opening a Blueprint and Setting it as a Docked Tab on El Capitan
UE - Platform - Apple - Apr 4, 2016When docking a blueprint as a tab in the main viewport the sprites and other actors placed in the default scene (including player start) begin to flicker. This flicker persists until you close and ...
Large snap scaling causes meshes to scale 0
UE - Editor - Workflow Systems - Mar 3, 2016With a large snap scale just selecting the uniform scaler will make the content scale to 0. It seems like it is far too easy for meshes to accidentally be scaled to 0 with snap scaling. Another exa ...
[CrashReport] UE4Editor_Engine!UEdGraphPin::Modify() [edgraphpin.cpp:619]
UE - Gameplay - Blueprint - Aug 29, 2017This is an infrequent crash coming out of the 4.17 release. User DescriptionsNICE PIN FIX NOW I CANT ADD VARIABLES NORMALLY Source Context 612 void UEdGraphPin::SerializeAsOwningNode(FArch ...
Replication issues & warnings if a client hitches while the server seamless travels
UE - Networking - Jul 28, 2020If a client hitches while a server performs a seamless travel, the client will get multiple lines of logspam of these warnings:Warning: UActorChannel::ProcessBunch: SerializeNewActor failed to find/ ...
Skeletal mesh reduction - Material settings are lost when regenerating the LOD in a mesh with a reduced material section
UE - World Creation - Worldbuilding Tools - HLOD - Nov 25, 2020Following code fixes this issue in FQuadricSkeletalMeshReduction::ReduceSkeletalMesh Section.ChunkedParentSectionIndex = bIsChunkedSection ? CurrentParentSectionIndex : INDEX_NONE; // ...
Final Gather Quality Post Process setting causes severe rendering issues in the Stack-O-Bot project
UE - Graphics Features - Lumen - Feb 24, 2022When opening the Stack-O-Bot project in 5.0 Preview 1, the project has a rendering issue where bright shimmering lights appear all around the screen. I discovered that this is due to the PostProcess ...
CreateDynamicMaterialInstance will pull from the base rather than overridden mesh on SkinnedMeshComponent when run from construction script
UE - Framework - Blueprint - Feb 6, 2025When UPrimitiveComponent::CreateDynamicMaterialInstance is called on a skinned mesh, and the input material is invalid, we call USkinnedMeshComponent::GetMaterial to get the base material on the exi ...
Crash when exporting static mesh actor to FBX (Array index out of bounds)
UE - Editor - Content Pipeline - FBX - Apr 25, 2025I set the Forced LOD Model on the mesh component > 1, then tried to export, this is what causes the crash. Here is my suggested fix, we just don't use Git or I'd do a PR: In the else() branch of FF ...
Crash on exit PIE after editing character blueprint of a code based side scrollers
UE - Gameplay - Apr 4, 2016After editing character blueprint of a code based side scroller project, starting PIE will show the camera detached from the character and exiting PIE causes the project to crash. NOTE: This appear ...