Use Single Process settings adjusted while Use Single Process is disabled are retained while Use Single Process is enabled

UE - Networking - Jul 1, 2015

Use Single Process settings adjusted while Use Single Process is disable are retained while Use Single Process is enabled. This can be problematic when there are issues with having Use Single Proces ...

Package game and standalone game crashing (possibly related to UE-6766)

UE - Gameplay - Dec 23, 2014

Crashes in UGameplayStatics::GetPlayerController, probably because World is NULL. When you package this vehicle game setup or play in standalone, the game will crash. 4.6.1 release crash (Standalo ...

Incorrect Lumen Scene direct lighting when objects behind masked landscape

UE - Graphics Features - Lumen - Oct 5, 2025

When objects are placed behind or beneath a masked landscape and r.Lumen.HardwareRayTracing.SurfaceCacheAlphaMasking is enabled, the direct light evaluation is incorrect. There are two workarounds, ...

Set World Location Not Working on Skeletal Meshes with Simulate Physics Enabled

UE - Gameplay - Mar 3, 2016

When a skeletal mesh is set to simulate physics, using the Set World Location node to set the world location of the mesh does not seem to be working. Turning simulate physics off causes the mesh to ...

ExpandEnumAsExecs always uses first Exec if an argument name matches Enum value

UE - Gameplay - Blueprint - Jan 13, 2023

Reproduced 3/3 times, issue also occurs in //UE5/Release-5.0 - CL 20979098 Binary. Confirmed NOT a Regression. EnumBugBP uses two enum cases and three argument cases for 6 total permutations:Enum w ...

Duplicated Blueprint Causes Incorrect Target for Events

UE - Gameplay - Blueprint - Oct 15, 2015

Duplicating a blueprint that has a node hooked up to BeginPlay causes the BeginPlay in the duplicate blueprint to target the original blueprint. This does not appear to affect functionality. Occur ...

"Diff Against Depo" Does not Display Changes to AI Controller Property

UE - Gameplay - Blueprint Editor - Mar 2, 2016

When using Diff Against Depot to see changes made to a file since it was last checked in, changes made to the AI Controller default property are not displayed under the defaults section. Found in ...

Lens Flare and Bloom do not work for local multiplayer

UE - Graphics Features - Jan 22, 2015

Using a post process volume with lens flare and a bloom enabled do not appear functional in split-screen multiplayer. Other selections in the PPV work as intended (ie. Fringe, Ambient occlusion). ...

Editing the Default Value of a Struct Variable Disconnects Pins in Blueprints

UE - Gameplay - Blueprint - Mar 1, 2016

When using a struct in a blueprint, if you go into that struct and alter the default values of one of the variables, any pins that were used relating to that variable are disconnected in blueprints. ...

Struct array variables interpret multiple Structs as the same if they have the same values

UE - Gameplay - Blueprint - Jul 7, 2015

Struct array variables interpret multiple Structs as the same if they have the same values. This does not occur if the values in the Structs added to the array are different. Test project in 4.8.1 ...