Left and Right eye render Ambient Occlusion differently

UE - Platform - XR - Jan 18, 2019

Ambient Occlusion appears to render differently in each eye when using the oculus rift. This give the user a cross eyed feeling ...

Dedicated server crashes when running a multi-process game in standalone with the Code Editor plugin enabled

Tools - Jan 17, 2019

Attempting to run a standalone server and client using different processes will crash if the Code Editor plugin is enabled. ...

ARCore fails to package due to permission error with ARKit enabled

UE - Platform - XR - Jan 17, 2019

When using the handheld AR template and trying to package for ARCore, the package or launch on attempt will fail due to some permissions errors with Apple. If ARKit is disabled the editor will lock ...

Fatal error importing via Datasmith (memory allocation)

UE - Editor - Content Pipeline - Datasmith - Exporters - Jan 17, 2019

Trying to import a large Revit asset using Datasmith causes the system to use all of it's memory. Certain systems may receive a memory allocation error in the process. ...

Renaming a folder that contains a read-only asset from the Sources Panel causes the Content Browser and Sources Panel to desync

Tools - Jan 17, 2019

Renaming a folder that contains a Read-only asset from the Sources Panel causes the Content Browser and Sources Panel to desync. This causes the original folder (which should still exist since the E ...

Sphere traces where Start and End locations are the same are not triggering any hits

UE - Simulation - Physics - Jan 17, 2019

This has changed since 4.21, AOE attacks are not being registered. Paulo S took a look and determined that this is an engine bug: Happens with any radius based attack. What I found is that any Sphe ...

Ensure on open if custom Project Setting has a reference to a Blueprint that constructs an object

UE - Gameplay - Blueprint - Jan 16, 2019

An ensure is thrown when opening a project if a custom Project Setting has a reference to a Blueprint that constructs an object. The ensure can be found in the Callstack section below. Regression?: ...

BuildGraph builds some tools for Win32 even if Win32 is excluded from the build

UE - Foundation - Cpp Tools - Jan 16, 2019

When creating a local binary build of the Engine using the BuildGraph, there are several tools that are built for Win32 even if Win32 was specifically excluded from the BuildGraph (ie. -set:WithWin3 ...

GPU Particle Preview Flickering with Distance Field Collision

UE - Niagara - Jan 15, 2019

When switching from Scene Depth Collision to Distance Field Collision for a GPU particle system the preview window flickers, but returns back to normal when switching back to Scene Depth. Found in ...

IOS force feedback strength does not increase

UE - Platform - Mobile - Jan 15, 2019

Force feedback does not strengthen when expected on IOS. It stays the same regardless of where the pawn is on either the red or yellow squares. Tested on 9753_iPhone 7+ 12.0.1 and 16021_iPhone XS ...