Unreal Engine Issues
Unreal Engine Issues
Custom Primitive Data are not (fully) functional with Instanced Static Mesh components
UE - Rendering - Features - Mar 29, 2022If the ISM component is not in a blueprint, but added directly inside the level, the CPD works. If the CPD value is set from a construction script through either the Default or Transient function, i ...
CachedMaxDrawDistance value are not updated by CullDistanceVolume in persistent Level
UE - Engine Scaling - Streaming - World Composition - Dec 16, 2022in PIE, RerunConstructionScript() is executed and actor's CachedMaxDrawDistance is updated as expected. in packaged game, RerunConstructionScript() is not executed so, CullDistanceVolume is not u ...
Infinite loop in UAnimSequence::ExtractRootMotion when sampling backwards
UE - MVF Character - Animation - Dec 6, 2021When sampling root motion backwards we can hit an infinite loop in ExtractRootMotion. This happens if the initial sample time + negative delta is off the end of the animation clip. In that case FA ...
Metahuman Hair Physics becomes jittery when 32x Antialiasing is enabled in MRQ
UE - CAPT - Color Pipeline and Rendering - MRQ - Aug 15, 2023Enabling 32x AntiAliasing on an MRQ causes metahuman hair physics to become twitchy in the image sequence output. ...
UE5.4 Regression - crash when disabling shader optimization while raytracing is enabled on D3D12
UE - Rendering - Architecture - Shaders - Jul 15, 2024Certain interactions between a Rect Light with a Light Function and a Post-Process volume lead to a check() when compiling a Ray Tracing PSO for tracing lights. This check() only happens when shader ...
Shader Symbols not Generated for Windows Platform when r.Shaders.Symbols=1
UE - Rendering - Architecture - Shaders - Feb 28, 2025Shader symbols are not generated for the Windows platform. Attempts were made to set the r.Shaders.Symbols=1 value in the projects DefaultEngine.ini, the engines ConsoleVariables.ini and the engine ...
Ragdoll Physics do not Function Properly on a Mirrored Skeletal Mesh
UE - Simulation - Physics - Dec 1, 2015Selecting the default character/skeletal mesh (or any skeletal mesh) in the viewport, right-clicking and transforming it so it mirrors on the X,Y, or Z axis will cause the physics to act erratically ...
Setting the brush type of a custom volume BP causes the editor to crash
Tools - Nov 17, 2014Setting the brush shape of the root component for a custom volume BP causes the editor to immediately crash. ...
Projectiles transferring additional velocity when stepped on.
UE - Gameplay - Jul 10, 2015If a player steps on projectiles they have their velocity overridden and are launched away from the projectile. ...
The Random Audio Node Function 'Randomize Without Replacement' does not Function Correctly
UE - Audio - Apr 6, 2015When attempting to play random sounds using the 'Random' node within the audio editor, the 'Randomize Without Replacement' does not function as explained via the tooltip. The options says that if y ...