Cannot Create a New Project if Windows Username Contains a Special Character

Tools - Oct 26, 2015

If you have a windows username with a special character (in this case, it was ^), the launcher will not allow you to create a new project, and a warning appears indicating that the path cannot conta ...

Spawning Component with Exposed on Spawn Variables Returns Incorrect Owner

UE - Gameplay - Components - Jan 12, 2016

Attempting to get the owner of an Actor Component that contains an exposed variable will return the Spawner blueprint's display name instead of the Spawned Actor it is added to. Found in 4.10.2 bin ...

Duplicating a Function Containing Add Child Actor Component Causes Changes Made to the Duplicate to be Saved to the Original

UE - Gameplay - Blueprint - Nov 9, 2015

When you create a function containing an Add Child Actor Component node, duplicate that function, and then change the Child Actor Class option in the duplicate, the changes are also saved to the ori ...

Landscape components render black

UE - LD & Modeling - Terrain - Landscape - Dec 1, 2016

Workaround:Open the Landscape Material and click SaveReload the level Landscape components render black upon first-time compile. Observed in QA-Landscape - several chunks of the Landscape were bla ...

Ensure fires during nativized build while packaging for any BP class based on UAnimNotify

OLD - Anim - Oct 25, 2018

Cooking will fail while attempting to convert a non-data-only Blueprint class based on the native UAnimNotify class when Blueprint nativization is enabled. Workaround in lieu of a fix would be to e ...

Certain combinations of 'bRenderStatic' and 'bNoSkeletonUpdate' on SkeletalMeshComponent produce undesirable behavior.

UE - Graphics Features - Aug 7, 2019

Issues observed:  - When bRenderStatic is on and bNoSkeletonUpdate is off, CachedMeshDrawCommands takes a significant chunk of time, because the scene primitive transform is being updated every fra ...

Landscape Tessellation Issues

UE - LD & Modeling - Terrain - Landscape - Sep 23, 2019

We are having a display issue with tiled landscapes displaying well below full tessellation in editor, but displaying fine in game. We can "fix" this issu by unchecking "Use Default Falloff" in deta ...

SetCollisionEnabled shouldn't check owner

UE - Simulation - Physics - Nov 8, 2019

Attempting to set the collision of a component to NoCollision while the actor's collision is disabled will prevent the component's collision from changing. This is because of the early exit in UPrim ...

Loading levels imported with World Composition's Import Tiled Landscape option from a level without World Composition enabled loads landscape components a World Origin

UE - World Creation - Worldbuilding Tools - World Composition - May 6, 2020

Landscapes created with Import Tiled Landscape are loaded at the World Origin when loaded in a level without World Composition enabled. Enabling World Composition in the second level fixes this iss ...

ShooterGame clients can fail to connect to a server under packet loss when network encryption is enabled

UE - Networking - Jul 17, 2020

ShooterGame demonstrates the issue where when encryption is enabled, if the (unencrypted) EncryptionAck message is dropped, the resent messages will be encrypted since the server has enabled encrypt ...