Crash after clicking the Build button on Linux

UE - Platform - Linux - Sep 17, 2019

This crash is a regression from 4.22.3 (CL-7053642). If lighting is built by selecting "Build Lighting Only" the Editor will not crash. This does not reproduce on Windows with -vulkan. This was rep ...

GameplayAbility Blueprint's FGameplayAttribute does not retain value reference upon Compile

UE - Gameplay - Sep 17, 2019

GameplayAttribute-type function arguments in BP-callable functions(I.E a Blueprint event graph) or nodes have their value reset on BP compilation ...

Virtual Texturing UDIM's Packing Incorrect

UE - Graphics Features - Sep 17, 2019

In Content Browser Preview asset looks correct, but when opening and using texture. Only textures A and B are used instead of A,B, and C. Found in 4.23 CL# 8386587 and 4.24 CL# 8748719 ...

Crashes when copying an array of actors that implement an interface into an array of interface references

UE - Gameplay - Sep 17, 2019

When assigning an array of actors that implement a specific interface to an array of the specific interface the engine crashes. This doesn't happen if the actor array is put through a for each loop ...

Diffing Tool showing false positive when diff'ing identical blueprints using FText input pin

UE - Editor - UI Systems - Localization - Sep 17, 2019

When diffing the two blueprints, the FText values are deemed different when they are the same. A workaround has been found by doing a pure string-compare for FText inside "GraphDiffControl::ArePinsD ...

LandscapeComponent generates incorrect OccluderVertices for software occlusion

UE - LD & Modeling - Terrain - Landscape - Sep 17, 2019

OccluderVertices didn't consider the subsection's transition, so the position of the OcclusderVertices are not correct. I made a fix as follows: [Image Removed] [Image Removed] ...

Root motion with SubAnimInstance can cause notifies to not trigger.

OLD - Anim - Sep 16, 2019

Setting up root motion in a sub instance to RootMotionFromEverything seems to cause the sub instance to evaluate, and override the notifies of the animation that was playing, which prevents the noti ...

CharacterMovement component is not accurately reflecting the characters velocity when becoming uncontrolled during movement.

UE - Gameplay - Sep 16, 2019

The boolean "bRunPhysicsWithNoController" has an attached note that reads: " * Normally without a Controller, movement will be aborted and velocity and acceleration are zeroed if the character is w ...

Project Settings -> Plugins:OculusVR section not appearing for users without Oculus Software

UE - Platform - XR - Sep 16, 2019

Users (Oculus Quest) who have never installed Oculus store/software, are no longer seeing OculusVR plugin settings in 4.23. Confirmed in 4.24 MAIN at CL 8506911 ...

HLOD CalculateOverlap crashes when spheres barely overlap

UE - World Creation - Worldbuilding Tools - HLOD - Sep 16, 2019

The engine will crash when cluster bounds barely overlap. ...