Using Do Not Create Material in FBX import settings seems to result in only one Material Slot

UE - Editor - Content Pipeline - Import and Export - Nov 30, 2020

The licensee reported the following on this issue. The problem seems to be that the comparison below is not working properly. If the Material is not created, it will be a comparison between WorldGr ...

Particle System Textures On IOS Do Not Use Correct Mip Level

UE - Graphics Features - Feb 8, 2017

Particle systems will appear very blurry once deployed to an IOS device. The particle system looks correct while using the mobile preview. Another important note is that if a static mesh is in the s ...

Engine build fails due to Unresolved External Symbol error after adding a new global variable to the Engine and then trying to reference it within Engine code

UE - Foundation - Cpp Tools - UnrealBuildTool - Feb 7, 2018

Building the Engine in Visual Studio will fail due to an unresolved external symbol error if a new global variable is added to CoreGlobals.h and then referenced elsewhere in the Engine code. The bui ...

Reflection capture memory not released

UE - Graphics Features - Mar 16, 2020

Until 4.23.1, the value of the Texture Memory Cube is reduced to an appropriate size. It is explained in the following thread:https://udn.unrealengine.com/questions/398103/index.html ...

Set Material from a Spawned Class renders World Default Material

UE - Gameplay - Apr 29, 2015

When using a Blueprint to Spawn an Actor Class then using a Set Material Node, the engine will register a material change but will only show the World Default Material. Also Reproduced in Main Prom ...

The Starting Window Size For Standalone Ignores Values That Exceed A Cap

Tools - Jan 27, 2017

The Editor preferences where you set the starting resolution for standalone game will ignore the values given if they exceed a certain amount. In my case 1920 x 1080 was the limit where it started t ...

Crash when using Consolas font on Android SDK 24

UE - Platform - Mobile - Mar 29, 2017

A licensee reported that using the Consolas font on Android will cause the game to crash. I've narrowed it down to only occurring in the Android 24 SDK and on the ASTC configuration. Using Android(A ...

BP - Exclusive nativization will fail at cook time if a BP class includes a ChildActorComponent with a Data-Only BP set as the ChildActor class.

UE - Gameplay - Blueprint - Apr 20, 2017

Note: This does not occur when the nativization mode is set to "Inclusive" in the Project settings. Current workaround: Ensure that the ChildActor class is NOT a data-only Blueprint, by adding scri ...

Adding a key to an Absolute transform section will accumulate an extra transform offset when a transform override is set on a sequence. With attach track

UE - Anim - Sequencer - Feb 10, 2022

This is similar to [Link Removed] but still reproduces with an attach track. ...

FQuat::NetSerialize modifies the original value which can cause it to be replicated continuously

UE - Networking - Jun 8, 2018

FQuat::NetSerialize will always call Normalize() as part of replicating the current value, so that only the X, Y, and Z components need to be serialized (the W can be computed on load). This operat ...