Unreal Engine Issues

UBT crashes when doing an incremental build

There is a consistent crash when incrementally compiling headers containing generated code. The code for launching UHT accesses a property which is null when compiling with the UBT makefile. ...

Rebuild and Clean options in Visual Studio fails compile

Attempting to use Rebuild / Clean fails to compile. VS output shown in callstack. ...

Circularly referenced blueprints cause stack overflow in a package game without IOStore

Blueprint Cannot Give Niagara CPU Access To Skeletal Meshes Added From Blueprint

When a user tries to add a skeletal mesh component to a blueprint with a niagara system to use the skeletal mesh with that niagara system, the niagara system will stop rendering because it does not ...

Missing texture assets cause warnings on editor start: LogStreaming: Warning: Failed to read file '../../../Engine/Plugins/Developer/PlasticSourceControl/Resources/Icon128.png' error.

There are a number of missing texture assets which are failing to be read when the editor opens. This is causing a warning to be thrown each time the editor opens, potentially causing CI/CD tests (i ...

Perforce integration creates bad changelist

Perforce integration creates bad changelist when deleting or renaming a file, then renaming another into its place ...

Mac Editor crashes when deploying

This issue occurs NO MATTER your deployment type. (e.g. PIE, Launch, Package...) This is BLOCKING all deployment from the Mac platform. This is a regression and does not occur on Windows. ...

"Select New Skeleton" window appears behind editor and gives error

When you select an asset that references a skeleton that has moved, the editor asks you to choose a new skeleton. When you choose Yes is it gives the message "The Anim Blueprint could not be loaded ...

Property "GameFeatureData.PrimaryAssetTypesToScan.Directories" should be tagged with "ForceShowPluginContent"

When using a Game Feature Plugin, one of the settings available in the "GameFeatureData" DataAsset (class UGameFeatureData) is "PrimaryAssetTypesToScan", which is an array of FPrimaryAssetTypeInfo s ...

Tilemaps with masked materials respond to lighting at incorrect directions

Tilemaps using lit methods of rendering are subject to strange lighting behavior. If the material for the tilemap is using a 'masked' method of rendering.  Lighting will appear at incorrect angles. ...