Quit and Exit commands do not close project on Android

UE - Platform - Mobile - Apr 3, 2019

LogWindows: FAndroidMisc::RequestExit(0) does not get sent with 4.22 and 4.23. Does not occur in 4.21. ...

Editor crashes if a sublevel with a landscape is duplicated then added to the persistent level as a sublevel.

UE - LD & Modeling - Terrain - Landscape - Aug 18, 2016

If a sublevel is duplicated and contains a landscape, the editor will crash when the duplicate level is added to the persistent level as a sublevel. Frequency 4/4 Regression (yes) issue (does not ...

Draw Material to Render Target renders black in Standalone

UE - Graphics Features - Sep 28, 2016

The 'Draw Material to Render Target' in blueprints renders black when launched in Standalone. This is not the case when using the same blueprint and running PIE. The interesting thing about this is ...

Actor Component Replication Not Working on Dynamically Spawned Components in Blueprint

UE - Networking - Aug 7, 2018

Actor components that are spawned dynamically through Blueprint are not being properly replicated to the client.  Found in 4.20 CL# 4233996 and reproduced in 4.21 Main CL# 4258917 Unable to test i ...

Sequencer 3D Trajectories run very slow on deep hierarchies

UE - Anim - Sequencer - Aug 27, 2018

Using a Level Sequence with deep hierarchies causes the FPS to drop to low numbers when they are all selected within the Sequence. This is a regression from 4.19.2 (CL-4033788). This issue was repo ...

Assertion Failure: Cascade Particle !bPostTickComponentUpdate in same tick group as Cascade Particle system submission.

UE - Niagara - Apr 18, 2019

Attached Project:  [Link Removed] Since Upgrading project to 4.22, Licensee has been experiencing an Assertion crash in their built game. "I'm not exactly sure why it crashes. It's a very specific ...

Crash upon opening packaged game when Event Driven Loader is disabled

UE - Foundation - Core - Apr 26, 2019

Packaged games are unable to open when Event Driven Loader is disabled. The error message given is: Assertion failed: !Linker->GetSerializeContext() [File:D:\Build\++UE4\Sync\Engine\Source\Runtime\C ...

WorldNormal no longer works on deferred decals

UE - Graphics Features - May 31, 2019

The SceneTexture:WorldNormal is not taking in direction for color when used on deferred decals. As a result, the decals using this node always show up as grey. Tested in 4.21.2 (CL - 4753647), 4. ...

Vive Trackpad X and Y always return 0

UE - Platform - XR - Feb 3, 2020

Platform-specific input for pad axis in 4.24 leads to missing value in VIVE. in 4.23.1 this is not reproduced. ...

Add Actor World Offset does not work consistently with physics-enabled objects

UE - Simulation - Physics - May 3, 2022

Add Actor World Offset does not work consistently with physics-enabled objects Repro Rate: 3/3 Tested this in //UE4/Release-4.27 @ CL#18319896 and the issue did not occur there, it is a regression ...