Unreal Engine Issues
Unreal Engine Issues
Widget Flickering Observed in RetainerBox with Incorrect LayerId
UE - Editor - UI Systems - UMG - Nov 19, 2024Setting the Phase Count of a RetainerBox to 2 or more may cause other widgets within the same UserWidget to flicker. Upon investigation, we found that during frames where the flickering occurs, the ...
Lumen temporal flicker after leaving Editor open for 3+ days
UE - Graphics Features - Lumen - Nov 18, 2024Lumen GI has temporal flickering/noise after running the Editor for 3+ days. ...
BakedSourceTexture missing from Sprite in packaged game
UE - Gameplay - Paper2D - Nov 15, 2024The UPaperSprite::BakedSourceTexture will be nullptr in a packaged game if the sprite is not referenced by the UGameInstance. The attached sample project demonstrates this scenario. ...
Material attribute layers issue with texture sample and VT lookups
UE - Rendering Architecture - Materials - Nov 14, 2024When using material attribute layers in a material layer setup, there is a potential discrepancy in the number of VT Lookups presented in the material instance's Platform Stats. When the same textur ...
External Actors can hold stale references to Blueprint classes as edited instance properties
UE - World Creation - Worldbuilding Tools - Nov 14, 2024When a component is removed from a class that exists as an instance with external actors enabled, a deleted BP component on an actor will remain referenced by the instance. Disabling External Actor ...
Editor preview window for CurveLinearColorAtlas does not automatically update when their CurveLinearColor asset is changed
UE - Graphics Features - Nov 12, 2024When the CurveLinearColor asset assigned to a CurveLinearColorAtlas is edited (e.g. change the colors of the gradient), the preview window of CurveLinearColorAtlas editor does not automatically upda ...
Skeletal Mesh Customizable Object Node does not warn of changes to mesh sections.
UE - Anim - Mutable - Nov 12, 2024When reimporting meshes with changes to their material sections, specifically additions, there is no indication that there will be an issue on output of a generated mesh. Ideally, we can watch for a ...
Lyra: OnSpawn player abilities can fail to activate on client in networked sessions
UE - Gameplay - Gameplay Ability System - Nov 12, 2024A licensee who built their game on top of Lyra has reported that OnSpawn abilities, which is a feature provided by the LyraGameplayAbility base class via its ActivationPolicy, have a chance of faili ...
Modeling Mode Vertex Paint Color values are incorrect
UE - Graphics Tools - Modeling Tools - Nov 12, 2024There is a mismatch in between the input and output value of vertex colors painted using the "Modeling Mode" vertex painting tool. The example in the licensee's case is that if they wanted a 0.25f v ...
LoadMapMisc LLM category contains Static Mesh allocations
UE - Rendering Architecture - Nov 12, 2024UInstancedStaticMeshComponent::CreateSceneProxy() is missing a LLM_SCOPE(ELLMTag::InstancedMesh); and during level loading allocations for it appear in LoadMapMisc instead of InstancedMesh. Addi ...