NiagaraSystem with EniagaraGpuComputeTickStage::PostInitViews rarely crashes due to multi-thread race conflicts

UE - Niagara - Mar 1, 2025

NiagaraSystem with EEiagaraGpuComputeTickStage::PostInitViews should not have bSupportsParallelGDME because of possible multi-threaded contention, but FNiagaraSystemInstanceController::GetGpuCompute ...

Ensure triggered by level blueprint when Play as Listen Server is set

UE - Gameplay - Blueprint - Jul 14, 2015

When Editor Multiplayer Mode is set to Play As Listen Server the editor will trigger a breakpoint on exiting PIE if any event is ran though the level blueprint ...

Splitting a struct in an Anim Blueprint does not work

OLD - Anim - Mar 23, 2015

In an Anim BP, splitting the transform structs of a Transform (Modify) Bone node causes the node to be come non functional. Transform components must be combined in order for the node to work. EX ...

FBX files with multiple Meshes with only 1 unwrap per mesh will have invalid Light Map coordinates assigned

Tools - Jun 8, 2014

An FBX with Multiple Meshes and only one unwrap per mesh (no 2nd UV channel) will import the first mesh in the file correctly but will produce invalid lightmass settings on each additional mesh impo ...

Sound Class Radio Filter Volume Functionality

UE - Audio - Jan 12, 2015

When creating a Sound Class and editing/applying the 'Radio Filter Volume' option, the sounds associated with the sound class seem to have their attenuation settings overridden or mixed in with an i ...

Incorrect Root Motion Rotation on AnimSequences created with Sequence Recorder

UE - Anim - Sequencer - Aug 11, 2016

Incorrect Root Motion Rotation on AnimSequences created with Sequence Recorder ...

SlateDialogs does not block user from setting a folder as the uproject in UFE

UE - Platform - Linux - Aug 20, 2016

Users are able to set a folder as the project using SlateDialogs in Unreal Frontend on the Linux machine. ...

Draw Material to Render Target renders black in Standalone

UE - Graphics Features - Sep 28, 2016

The 'Draw Material to Render Target' in blueprints renders black when launched in Standalone. This is not the case when using the same blueprint and running PIE. The interesting thing about this is ...

SyncGroups Do Not Function between AnimSequences when Blend Time is 0

OLD - Anim - Sep 22, 2015

SyncGroups Do Not Function between AnimSequences when Blend Time is 0 (zero) *It is quesitonable SyncGroups function between AnimSequences regardless of what the blend time is set to, but especiall ...

Using shortcut to find actor reference in level blueprint opens additional eventgraph windows in level blueprint editor

UE - Gameplay - Blueprint - Feb 24, 2016

Using shortcut to find actor reference in level blueprint opens additional Eventgraph windows in level blueprint editor despite the event graph containing the reference being open already. ...