Duplicating many Actors at once in a Level Instance while in Level Instance Edit will result in a jumbled mess of Actors on the Persistent Level

UE - World Creation - Worldbuilding Tools - Level Instances - Feb 12, 2025

Duplicating many Actors at once in a Level Instance while in Level Instance Edit will result in a jumbled mess of Actors on the Persistent Level. The licensee has encountered this in Unreal 5.4 and ...

Ribbons Don't Follow Their Source Particles When Scaling

UE - Niagara - Mar 23, 2020

When Ribbon Data in a particles system that is following is scaled in an instance the ribbons scale appropriately, but they don't follow updated location of their source particles. See the attached ...

GPU specific issue with Lighting while moving - GTX 770

UE - Graphics Features - Apr 26, 2017

While testing GPU - ContentExamples - Lighting - Nvidia gtx 770 in the 4.16 GPU Compat Pass, I noticed a strange effect on lights while the player is in motion. I've had multiple people attempt to ...

Creating blueprint based on landscape crashes editor

UE - LD & Modeling - Terrain - Landscape - Aug 24, 2016

If a blueprint is created from a landscape object, the editor will crash. Frequency: 5/5 ...

Distance Field Mesh default resolution artifacts on some shape meshes

UE - Graphics Features - Feb 10, 2016

Distance Fields generated for the 4 basic static mesh assets in the modes panel appear to have artifacts or low resolution. This is only affecting certain shapes that I can see. Adding in assets fro ...

VR Trackpad Axis Values 0

UE - Platform - XR - Dec 16, 2019

Trackpad Values return 0 Additionally: I also observed that the Go's trigger is registering as Trigger MotionController (R) Facebutton 1  and that previously there were MotionController (R) Thumb ...

"Always Center Window to Screen" No Longer Functioning in New Editor Window (PIE)

Tools - Dec 11, 2015

Regression: In UE4.10, the border that now occurs around New Editor Window causes window to extend beyond native screen resolution designated in Editor Preferences causing the window to 1) Not be ce ...

FileSystemDerivedDataBackend may output a corrupted access log

UE - Foundation - Core - Derived Data - May 20, 2021

This problem is caused by the AccessLogWriter has not been flushed at the termination. The following workaround flushes the Writer.class FFileSystemDerivedDataBackend : public FDerivedDataBackendInt ...

Viewport deselect hotkey no longer works

Tools - Dec 26, 2014

BRANCH: MAIN CHANGELIST: 2374441 PLATFORM: Windows DESCRIPTION: The functionality to use the hotkey to deselect an object in the viewport using the ESC key no longer works in 4.7 without first sel ...

Android Client unable to join VOIP Host Session

UE - Online - Aug 6, 2019

Android client is unable to join a VOIP Hosted Session. The following messaging occurs when the Client tries to join a found session on Android:LogInit: BSD_Android: I am localhost (127.0.0.1:0) L ...