UDN Bug: ASTC compression becomes greyscale

UE - Anim - Mutable - Feb 13, 2025

Bug reported at https://udn.unrealengine.com/s/question/0D5QP00000tOpXN0A0/using-mutable-plugin-results-in-greyscale-textures-on-android-xr?fromCase=1 ...

Cannot Access Spawn Actor From Class Inside Function Library

UE - Gameplay - Blueprint - Jun 1, 2016

Spawn Actor From Class is not accessible inside of a blueprint function library. It is expected that it would be accessible and would come with an exposed world context object pin. ...

Volume artifacts (Bleeding)

UE - Graphics Features - May 31, 2023

GlobalShaderCache file is missing when Direct X 11 SM5 is disabled for packaging

UE - Graphics Features - Nov 16, 2016

When trying to launch a .exe after disabling SM5 in the project settings, an error will appear. The global shader cache file ../../../../Engine/GlobalShaderCache-PCD3D_SM5.bin is missing. ...

Adding a Structure BP parameter with a Enum BP as a member to a Niagara Module Script crashes the engine

UE - Niagara - Apr 6, 2022

Adding a parameter of type structure bp which references an enum as a value to a module script crashes the engine. This issue is also occurring in 4.27. ...

Set Morph Target not being sent to children of Inherited Mesh

OLD - Anim - Sep 4, 2015

In previous versions of UE4, Set Morph target to call the Inherited Mesh and would result in any children of the Inherited Mesh that shared that morph target name to morph. In UE4.9 this no longer ...

Crash when removing Blueprint function

UE - Gameplay - Blueprint Compiler - Apr 23, 2018

The Editor crashes whenever the reference to the "DeleteThisFunction" function is deleted. ...

SIGSEGV: invalid attempt to access memory at address 0x3

UE - Platform - Apple - Jan 30, 2015

Crash Report: [Link Removed] ...

A Blueprint created from Actors in the level does not preserve the relationship (hierarchy and transforms) of both components

UE - Gameplay - Blueprint - Aug 11, 2015

A Blueprint created from Actors in the level does not preserve the relationship (hierarchy and transforms) of both components. Reproduced in 4.8.3 binary, 4.9 Release (//depot/UE4-Releases/4.9/Prom ...

Audio playback does not function when streaming video with the media player asset

UE - Foundation - Cpp Tools - Plugin System - Jun 22, 2015

Video streamed through the media player asset is not accompanied by audio. The issue occurs for all supported video formats. Currently this has only been tested with streaming via URL due to [Link R ...