Unreal Engine Issues
Unreal Engine Issues
Crash after setting material of Text Render actor to an instance of the default material
UE - Graphics Features - Jul 15, 2020Setting the material of Text Render to an instance of the default material then running as in Standalone results in a crash. ...
Static lighting isn't bouncing when using Layered Materials
UE - Graphics Features - Lumen - Aug 13, 2020Static lighting will not bounce on the ceiling when using a Layered Material. The Material Attributes Layers node is used which doesn't appear in 4.24.3 so this isn't a regression. This was report ...
Max Depenetration Velocity cannot be set to zero after setting it to a non-zero value
UE - Simulation - Core - Mar 1, 2021It seems that when setting the Max Depenetration Velocity to a non-zero value, you are then unable to set it back to 0. Tested in //UE4/Release-4.25 @ CL 14469661 and this did not occur so marking ...
Custom Primitive Data are not (fully) functional with Instanced Static Mesh components
UE - Graphics 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 - World Creation - Worldbuilding Tools - 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 - Anim - Gameplay - 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 - Virtual Production - Tools - 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 ...