Placing meshes on World Partition Grid causes them to load in from any distance

UE - World Creation - Worldbuilding Tools - World Partition - May 26, 2023

This is not a regression as in 5.1.1 the meshes will load and unload in their proper cell squares when entering and exiting the load distance threshold ...

Large brush sizes causes hitching in Landscape Sculpt mode

UE - Graphics Tools - Terrain - Landscape - Jan 19, 2023

In my case I used the erosion brush and smooth brushes.  Not a regression checked in Version: 5.1.0-23058290+++UE5+Release-5.1 ...

Particle Effects Do Not Play in Transition Maps

UE - Graphics Features - Oct 24, 2016

Particle effects do not seem to be playing in transition maps. Found in 4.13.1. Reproduced in 4.12.5 and 4.14 Preview 1. ...

ShadowProject gpu performance regression from Aftermath

UE - Graphics Features - May 9, 2017

The issue was originally noticed between 4.15.1 and 4.16 Preview, but now appears to have regressed between 4.15.1 and 4.15.2. ...

CLONE - ShadowProject gpu performance regression from Aftermath

UE - Graphics Features - May 19, 2017

The issue was originally noticed between 4.15.1 and 4.16 Preview, but now appears to have regressed between 4.15.1 and 4.15.2. ...

MaxDrawDistance does not work with HLOD

UE - Graphics Features - Aug 19, 2019

1. Create HLOD. 2. Set DesiredMaxDrawDistance. 3. DistanceCulling does not work. ...

Precompile occurs in Niagara when Standalone is started, increasing load time.

UE - Niagara - Mar 11, 2021

In 4.26.1, if you remove the collision module from NiagaraSystem, the Precompile will not occur. ...

Inserting before a FSlateImageRun twice will cause crash

UE - Editor - UI Systems - Apr 12, 2019

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 ...

Memory Leak caused by auto save files

UE - World Creation - Worldbuilding Tools - World Partition - Mar 20, 2023