Shader used factories/types/pipelines should be in DDC key

UE - Graphics Features - Jan 31, 2018

A licensee noticed that the ShouldCache types for FLandscapeMaterialResource changed in the 4.18.2 but this did not affect the DDC keys generated. This caused an endless compilation loop where the s ...

Haptic effect for Oculus touch does not last longer than ~2 seconds

UE - Platform - XR - Jan 30, 2018

Haptic effect for Oculus touch does not last longer than around 2 seconds even when set to a longer time. ...

UE4 Crashes if multiple Vive Trackers or Lighthouses are used

UE - Platform - XR - Jan 24, 2018

User reports that if more than 5 trackers are connected, UE4 crashes Suggested fix: Root cause of bug is related to the fact that UE has no setup to receive input events from Vive Trackers. (we ha ...

Debug Console output remains on screen after closing VR Preview if "Debug in stereo layer' is enabled

UE - Platform - XR - Jan 23, 2018

Affects VR Preview in Editor Reproduced in 4.18.3 CL 3832480 and 4.19 P1 CL 3837072 ...

Location Transform Not Applied to Animation in PIE

OLD - Anim - Jan 22, 2018

-Changing the location transform using Additive Layer Tracks is not visible when PIE and instead only visible in the Animation Preview. This only occurs when keying the location but not with scale ...

Blutility changes are reverted when compiling an actor

UE - Gameplay - Blueprint - Jan 16, 2018

Some information is not retained when compiling an actor if the information was changed via a blutility event. Additional info. Adding a static mesh component to an actor will not be retained on ...

4.14 fails to launch on macOS High Sierra

UE - Platform - Apple - Jan 15, 2018

The engine will crash in `FMacPlatformSplash::Show()` when trying to launch on macOS High Sierra. ...

Stereo layer graphical error after scaling the stereo layer

UE - Platform - XR - Dec 20, 2017

Stereo layer appears offset and scaled incorrectly when scaling a stereo layer.  ...

[CrashReport] UE4Editor_ShaderCore!BuildShaderFileToUniformBufferMap() [shadercore.cpp:750]

UE - Graphics Features - Dec 15, 2017

User comment:enabled composure and i get a hard-crash now Not seeing any vanilla builds in crash report, looks like source builds. ...

Image widgets need to be invalidated (once) before material parameter can cause changes

UE - Editor - UI Systems - Dec 11, 2017

The cache for images inside of an invalidation box needs to be invalidated at least once before changing a parameter that is applied to the material of the image will have an effect. ...