Unreal Engine Issues
Unreal Engine Issues
Atmospheric Fog Sun Disc Has Wrong Intensity
UE - Graphics Features - May 4, 2018This behavior has been observed in 4.18.3, 4.19.2, and Main (CL 4048405). Note that adding BP_Sky_Sphere to the scene and assigning the Directional Light Actor to it will fix the issue. Per User: ...
Atmospheric Fog Sun Disc Has Wrong Intensity
UE - Graphics Features - May 4, 2018This behavior has been observed in 4.18.3, 4.19.2, and Main (CL 4048405). Note that adding BP_Sky_Sphere to the scene and assigning the Directional Light Actor to it will fix the issue. Per User: ...
"Support Compute Skincache" throws an Assert for games on Linux
UE - Graphics Features - Apr 16, 2019After enabling "Support Compute Skincache" in the project settings and packaging a game on Linux, the packaged game will throw an assert. Any setting that turns "Support Compute Skincache" on automa ...
Cloth Rendering - Optimizations cause a one frame geometry stretch when off screen cloth is teleported back on screen.
UE - Simulation - Core - Aug 26, 2021Render optimizations are causing the cloth render data to be updated one frame too late after an off screen cloth object has been teleported back on screen. The optimisation triggers itself after a ...
Materials using Landscape Layer Blend are black
UE - Graphics Tools - Terrain - Landscape - May 4, 2022When applying a Landscape Layer Blend of textures to the Material Base Color, the preview does not update or shows black instead of how the material is supposed to look. When you disconnect the lay ...
Networked root motion montage with rotation fighting smoothing
UE - Gameplay - Player Movement - Oct 30, 2023A licensee is reporting a sim proxy is playing a networked anim montage with root motion, that the rotation changes will fight between what's produced in ::SimulateRootMotion and ::SmoothClientPosit ...
Datasmith floods network with UDP traffic in a lab environment
TM - Datasmith Exporter - Aug 28, 2023They've had some luck disabling UDP transport as mentioned in the following articles:https://docs.unrealengine.com/5.2/en-US/udp-messaging-settings-in-the-unreal-engine-project-settings/https://foru ...
[3ds max] Some geometry will display in all black in Path Tracer renders
UE - Editor - Content Pipeline - Datasmith - Exporters - Dec 12, 2025Reported in SF [Link Removed] Some geometry from 3ds Max will display as all black when viewed in Path Tracer rendering. This effect is visible in both UE and Twinmotion. This was tested with Data ...
KiteDemo: DestroyActor Warning when Saving - Height_x3_y2_C_1
UE - World Creation - Worldbuilding Tools - World Composition - May 4, 2017While testing in KiteDemo - //UE4/Release-4.16 CL 3420042 in Binary – When the editor autosaved I noticed a warning occurred in the output log. – Issue occurs during any Save operation. User can use ...
[CrashReport] Access violation - FBlueprintCompilationManagerImpl::ReinstanceBatch
UE - Gameplay - Blueprint - Jul 20, 2017This is a trending crash in the 4.17 Preview. Unfortunately users have not provided any additional information. There is no record of this crash occurring in 4.16.2, so it is possibly a regression. ...