"Support Compute Skincache" throws an Assert for games on Linux

UE - Graphics Features - Apr 16, 2019

After 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 ...

Actors are not properly restored when undoing a Replace Selected Actors transaction

UE - Gameplay - Components - Jul 22, 2020

When undoing a Replace Selected Actors operation, the resulting actor is corrupt and triggers an ensure where the root component is in the process of being destroyed. This is a regression that poppe ...

Cloth Rendering - Optimizations cause a one frame geometry stretch when off screen cloth is teleported back on screen.

UE - Simulation - Physics - Character - Aug 26, 2021

Render 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, 2022

When 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, 2023

A 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, 2023

They'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 ...

Error when attempting to generate an SSH key for remote building

Tools - Oct 7, 2016

Error is displayed when attempting to generate an SSH key.Unexpected remote arg: EngineQA@10.1.110.49:.ssh/RemoteToolChainPrivate.key rsync error: syntax or usage error (code 1) at /home/lapo/packa ...

Dithered LOD Transition Has Visual Pop

UE - Graphics Features - Dec 28, 2016

When a static mesh that is placed in the scene begins to transition using dithered LOD, The LOD that is being transitioned away from will "POP" in at full opacity for a moment just before the dither ...

FBatchedElements::Draw - OrthoZoomFactor can be reset to 1.0f if Line.bScreenSpace is ever false

UE - Graphics Features - Feb 20, 2017

A licensee has reported that the Draw function in BatchedElements.cpp can set the OrthoZoomFactor (not a local variable) to 1.0f if Line.bScreenSpace is ever found to be false. The line this can oc ...

KiteDemo: DestroyActor Warning when Saving - Height_x3_y2_C_1

UE - World Creation - Worldbuilding Tools - World Composition - May 4, 2017

While 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 ...