Unreal Engine Issues
Unreal Engine Issues
Initialize_AnyThread and CacheBones_AnyThread can be called multiple times on Saved Pose nodes in linked anim graphs
UE - Anim - Runtime - Jun 13, 2025Initialize_AnyThread and CacheBones_AnyThread can be called repeatedly on sub-graphs below Saved Pose nodes when they are part of a linked anim graph and the main anim graph has yet to be initialize ...
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 ...
Using Delay with Tick when Paused doesn't work
UE - Gameplay - Blueprint - May 28, 2015Using a delay node in an event graph of actor using tick when paused will not work. It pauses the delay node. ...
Exponential Editor Slate Performance Cost When Editing An Asset With Nested Instanced Structs
UE - Editor - Workflow Systems - Feb 20, 2024UDN Issue: [Link Removed] ...
Audio Capture Component Crashes When Unplugging Mic/Headset
UE - Audio - Jun 9, 2021Audio Capture Component does not appear to be handling external device swaps appropriately, and has a delayed crash that will occur if an in-use mic is unplugged. At a glance, it appears to involve ...
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 ...
StructUtils plugin's `FInstancedStruct` in a CPP-defined struct in a `TArray` on an actor component defined in CPP and implemented in BP. Populating the instanced struct in an actor BP's class defaults breaks serialization of the class defaults.
UE - AI - May 30, 2025Context Instanced structs are great for holding simple data with the main advantage they have is a low memory overhead unlike instanced objects. Problem The problem is in StructUtils plugin's `FIns ...
Meshes with no UV Coordinates will break the UVs of other meshes contained in the same HLOD if they share a material
UE - World Creation - Worldbuilding Tools - HLOD - Aug 26, 2016Meshes with no UV Coordinates will break the UVs of other meshes contained in the same HLOD if they share a material this only occurs depending on the specific order ...
Character sliding down a surface can prematurely land before reaching a walkable floor
UE - Gameplay - Player Movement - Apr 3, 2024Under some circumstances, a character falling and sliding along a sloped surface may get hung up near the bottom of the surface before actually landing on the floor. This seems to occur when slidin ...
Add Actor World Offset does not work consistently with physics-enabled objects
UE - Simulation - Physics - May 3, 2022Add Actor World Offset does not work consistently with physics-enabled objects Repro Rate: 3/3 Tested this in //UE4/Release-4.27 @ CL#18319896 and the issue did not occur there, it is a regression ...