Infrequent WaitingTask->IsCompleted crash related to FNiagaraSubmixListener closing QAGame -game

UE - Audio - Submixes - Jan 5, 2022

Infrequent WaitingTask->IsCompleted crash related to FNiagaraSubmixListener closing QAGame -game Unsure if related to [Link Removed] it was spawned from a group of oodle crashes and this is distinc ...

Base Pose Type Not Retained When Retargeting Animation with Additive Anim Type

UE - Anim - Rigging - Retargeting - Apr 22, 2022

Occurs 3/3 Times Base pose animation is not retained when retargeting animation with an additive anim type. ...

Ensure condition failed: bPlayingBackwards ? (CurrentPosition <= PreviousPosition) : (CurrentPosition >= PreviousPosition)

UE - Anim - Sequencer - May 10, 2022

The problem is caused by the animation sequence playback position being set out of range from Sequencer. The call stack is :  UE4Editor-AnimGraphRuntime.dll!FAnimSequencerInstanceProxy::UpdateAnim ...

Dynamic (transient) material instance assignment lost if object spawnable

UE - Anim - Sequencer - Jun 21, 2024

Material Instance Dynamic assigned to Spawnable objects with Editor Utility Widget get reverted when hit the Save button in Sequencer. This appears to come from the Material Instance Dynamic not be ...

A sampling result of DistanceFieldAOHistory is shifted to a wrong position.

UE - Graphics Features - Aug 21, 2024

DistanceFieldAOHistory introduces ghosting at low scalability and low screen percentages. This can lead to AO artifacts and a ghosting effect from the character. This issue was also observed on //U ...

Mesh Paint mode's Texture Paint has obvious artifact with UV seams

UE - Rendering Architecture - Oct 8, 2024

Mesh Painting Texture Paint tool can miss some pixels along UV seams, even with "Enable Seam Painting" set to True. This appears to be because of the difference between rasterization and sampling. ...

MaxDrawDistance set by CullDistanceVolume is lost on saving sublevel

UE - World Creation - Worldbuilding Tools - Feb 21, 2025

The UpdateCullDistanceVolumes behavior when saving was changed by CL-36588597. Only CullDistanceVolumes in the same sublevel can affect Max Draw Distance. ...

Clipping bsp brush rotates clipped face on brushes that have their X,Y,Z values altered

UE - LD & Modeling - Modeling Tools - BSP - Sep 17, 2015

If a bsp brush is rotated, then the brush clipping feature is used the "Brush Clipping" feature will rotate the created face by 90 degrees or disappear entirely (if set at an angle). ...

Game Instance being initialized twice in Android build

UE - Gameplay - Feb 11, 2015

When a project with a C++ custom game instance is packaged for Android, the game mode is initialized twice from different paths. Device log files attached ...

LIVE: Multiplying an FQuat*FQuat via pass-by-value crashes editor on open

UE - Foundation - Core - Nov 5, 2014

If a function takes in an FQuat value and then multiplies it by an FQuat, the project will build properly but then crash when trying to launch the project in the editor. Example project available b ...