[Stall] AudioMixerSourceManager::FlushCommandQueue when opening editor for asset

UE - Audio - Apr 7, 2022

Live issue. Stall occurring for some users in the 5.0 Release. Currently hit 577 times by 500 users as of 2022-04-29 No specific project occurring on ...

Crash when renaming AnimGraph function in AnimBP

OLD - Anim - Apr 17, 2015

When renaming the AnimGraph in an Animation Blueprint, the editor crashes after you hit enter. [Link Removed] [Link Removed] Occurs in: 4.7.5 Release CL:2503383 4.8 Main CL:2513846 ...

Blueprints with inherited Macros cannot save

UE - Gameplay - Blueprint - Feb 27, 2015

Blueprints with inherited Macros cannot save. Reproduced in 4.7.1 binary and Main (//depot/UE4/Promotable-CL-2455917) ...

No sound plays when using Built-In Spatialization or Simple ITD plugins

UE - Audio - Spatialization - Nov 10, 2021

No audio can be heard when using the Built-In Spatialization plugin. This is a regression from 4.26. Occurs in 4.27 and 5.0. ...

Precomputed AO Mask is no longer working

UE - Graphics Features - Dec 23, 2015

Precomputed AO Mask is no longer working in 4.11 Preview 1. This is a Regression from 4.10.x where this was working as intended. I've attached a zip file with the quick test that can be dropped in ...

Static Mesh Only enabled Foliage Actor causes serialization error in packaged game

UE - World Creation - Worldbuilding Tools - Nov 24, 2023

The crash can be worked around by modifying FFoliageISMActor::Serialize as following code : void FFoliageISMActor::Serialize(FArchive& Ar) { #if WITH_EDITORONLY_DATA     if (!Ar.IsCooking()) // ...

Creating Destructible with PhysXLabs and Fracture Tool in UE4 yield different results and same settings

UE - Simulation - Physics - Destruction - Feb 25, 2015

When creating fracturing a mesh in PhysXLabs vs UE4 fracture tool with both using Voronoi fracture and set to 25 chunks will give different results. The mesh (Attached below along with reference i ...

Small UInstancedStaticMeshComponent::UpdateInstanceTransformById bug

UE - Graphics Features - Nov 20, 2024

The call to UpdateInstanceTransform within UInstancedStaticMeshComponent::UpdateInstanceTransformById(..) sends bTeleport in place of bMarkRenderStateDirty that was added as part of Unreal Engine 5. ...

Instanced Static Mesh instance with negative scale has black lighting

UE - Graphics Features - Jun 11, 2019

[Image Removed] The image above was the results after building lighting.The far right spheres all have negative scaling(-1 on Y) and reverse culling checked and are instanced.The middle set of sphe ...

Point and Spot lights no longer work in Orthographic Projection Mode

UE - Graphics Features - Dec 30, 2016

Point and Spot Lights no longer work when using the Orthographic Camera Projection Mode. Note that the Directional Light still works as intended. This is a regression from behavior that worked in ...