Setting Tick Interval in GameMode to non-zero causes the game to freeze on pause

UE - Gameplay - Sep 22, 2016

If Tick Interval is set to something non-zero, the game will freeze when Set Game Paused is called. If not manually closed through the Task Manager, this will lead to an out of memory crash. This ...

memory leak from incorrect PhysX shape ref counting

UE - Simulation - Physics - Mar 9, 2017

PxShapes are created with a ref count of 1, and it is up to the caller to decrement this once the shape has been attached to an actor. There are a handful of places in the code in which this doesn' ...

Crash during save level and successive load level

UE - LD & Modeling - Terrain - Landscape - Apr 4, 2018

Changing the Max LODLevel on a landscape causes a crash in content examples. ...

Potential Memory Leak with Disaster Recovery Plugin

Tools - Aug 12, 2019

Enabling the disaster recovery plugin causes a memory leak when importing and editing a large amount of textures. This can result in either a system lockup or a crash. ...

GAS: Ability that destroys owning actor on activate causes crashes due to ABILITYLIST_SCOPE_LOCK

UE - Gameplay - Gameplay Ability System - Oct 31, 2023

A GameplayAbility that destroys its owning actor inside ActivateAbility() causes a crash, because actor destruction will modify the ability list but ActivateAbility() is called within an ABILITYLIST ...

Instanced subobjects are not always instantiated as expected.

UE - Gameplay - Blueprint - Aug 13, 2015

Instantiation of subobjects does not behave as expected when using the DefaultToInstanced UCLASS specifier. The licensee that reported the issue provided a sample project with some ensures added whe ...

[4.10 P2] UI is offcenter for dropdown menus and tooltips in editor

Tools - Nov 2, 2015

In Windows 10, on a system set up with 2 970GTX GPUs in SLI, the dropdown menues from the main navigation tabs will be offset and to the lower left of the screen when selected. ...

Crash triggering SetScalarParameterValueOnMaterial node

UE - Gameplay - Nov 30, 2015

Crash occurs when the user triggers the SetScalarParameterValueOnMaterial function node. ...