FBX 2016 Z-Up fails to import on some FBX files

Tools - May 24, 2016

When using Z-up for Axis Conversion on export using FBX 2016 from a modeling program (3DS Max 2016 used for this test), this axis selection will fail to import with the warning listed below. If usin ...

Crash with a migrated BP actor using InstancedStaticMeshComponent

UE - Gameplay - Blueprint - Nov 28, 2016

A licensee reported one of their map crashes on open when they tried to migrate from 4.12 to 4.14. There was no crash in 4.13. This seems to be caused by a certain BP actor that adds InstancedStat ...

Need to remove dependency on log2 on Android for older versions

UE - Platform - Mobile - Jun 27, 2017

The log2 function does not exist in libc.so on older Android. Using FMath::Log2 instead solves the issue. ...

GoogleVR fails to package with Gradle

UE - Platform - Mobile - Aug 10, 2017

Packaging with GoogleVR (Daydream) fails with Gradle enabled: https://answers.unrealengine.com/questions/678203/417-exporting-daydream-project-with-gradle-results.html ...

Missing default Marketing Icon for iOS projects

UE - Platform - Mobile - Nov 14, 2017

There is no default image in the Engine for the iOS Marketing Icon. ...

Setting the iOS Marketing Icon results in the icon being displayed at full size and interfering with the ability to scroll through the iOS settings

UE - Platform - Mobile - Nov 14, 2017

Setting an image to be used as the Marketing Icon results in the icon being displayed at full size and interferes with the ability to scroll through the full iOS section. ...

Array index out of range with StopTree

UE - AI - Mar 26, 2019

Crashes when exiting PIE while executing multiple async tasks. By explicitly executing EndTask and FinishAbort of RecieveAbort, this caused by performing out-of-range in array access to InstanceStac ...

SetConstraintBindingID of ConstraintSection on Sequencer cannot be set from Blueprint

UE - Anim - Sequencer - Jan 28, 2021

The SetConstraintBindingID of the ConstraintSection on the Sequencer is the BlueprintPure function. The licensee is trying to parent and child objects on the Sequencer using sequencer scripting, and ...

Out-of-bounds read caused by improper return size from FSocketSteam::RecvFrom in Unreal Engine

UE - Online - Jun 7, 2021

Overview: Function at fault: FSocketSteam::RecvFrom (https://github.com/EpicGames/UnrealEngine/blob/c3caf7b6bf12ae4c8e09b606f10a09776b4d1f38/Engine/Plugins/Online/OnlineSubsystemSteam/Source/Private/ ...

Sprite does not have a UV1 G channel.

UE - Niagara - Jun 16, 2022

The R channel of UV1 is not a problem. ...