DataTable::LoadStructData allocating wrong size

UE - Foundation - Core - Oct 5, 2016

Pointed out by a licensee here: UDataTableを読みこんだ際のメモリ破壊について When reading the `UDataTable, in DataTable::LoadStructData()` the contents of the struct are interpreted[Image Removed], but the size of ...

UDN : Mutable Trying to Access Invalid UEdGraph Pointer

UE - Anim - Mutable - Mar 6, 2025

Hello, We've started seeing a crash within Mutable when it tries to access the source graph in PIE. This only seems to be a problem when running a dedicated server as a separate process. We integra ...

POM material triggers Video Driver Crash

UE - Graphics Features - Apr 26, 2016

When a POM decal material is applied to a decal actor in the scene the video driver will crash. This worked prior to 4.11.0 release. Only when the material is assigned to a decal actor will the vide ...

Navigation mesh is generated ignoring collision for ISM added by construction script

UE - AI - Navigation - Apr 15, 2025

When opening a map with ISM in place, NavOctree is not updated because the ISM bounds are assumed invalid and the geometry is not taken into account in the navmesh build.  The following log output i ...

GPU Particle Emitter noticable stutter with steady stream

UE - Graphics Features - Apr 1, 2016

When using a GPU particle and setting a steady stream there is an obvious stutter compared to 4.10.4 where everything worked smoothly. Regression: YES This issue did not occur in 4.10.4 CL-2872498 ...

[CrashReport] UE4Editor_SequenceRecorder!FAnimationRecorder::UpdateRecord() [animationrecorder.cpp:464]

UE - Anim - Sequencer - Sep 14, 2017

This is a common and longstanding crash that has affected more than 300 users since 4.12. The callstack is closely similar to [Link Removed], although with different error messages. User Descripti ...

Manipulating Morph Target on Master Component distorts Slave Components

OLD - Anim - Apr 1, 2016

Manipulating Morph Targets on Master Component distorts Slave Components. It makes no difference if the slave component has the morph target being manipulated in the master See attached image and ...

GTAO console command minor issues

UE - Graphics Features - Oct 18, 2024

The following ambient occlusion console commands have issues: r.AmbientOcclusion.Compute ? The help text state it only works console but it also works on PC and likely other platforms. r.GTAO.Use ...

[CrashReport] UE4Editor-CoreUObject!UObject::SetLinker(FLinkerLoad *,int,bool) [UObjectLinker.cpp:107]

UE - Foundation - Core - May 13, 2019

Comment from user in crash group:I updated unreal engine to 4.22.1 and changed the project version from 4.21.2 to 4.22.1 and now it crash whenever i open a map Generated from CrashReporter ...

Fbx importer can import valid under 30Hz anim at 30Hz

Tools - Jul 17, 2017

The samplerate of a track was compute with the following formula Equation 1: number of Key / animation Time This formula work only if we have animation keys that are time equidistant. example of ...