Unreal Engine Issues

Initialization error when creating FEventReply objects from Python

the handled value passed to unlock_mouse is actually treated as unhandled, because FEventReply has no uproperty and no Identical()function of its own. Adding WithIdenticalViaEquality can fix this is ...

Translucent Wireframe Materials Exhibit TSR Aliasing/Crawling Due To Incorrect Velocity Rendering When Set to Output Depth And Velocity

Note that this bug potentially also affects a wide variety of material / geometry setups; however, a translucent wireframe setup is currently the main reproduction case. The issue may also be notice ...

Niagara problem with "Static Mesh Location" module

Control Rig Creation Crash Triggered by “skel” Prefix in Skeletal Mesh Name

When generating a Control Rig from a Skeletal Mesh that contains “skel” in its name—or uses it as a prefix (i.e. skel_test)—Unreal Engine crashes. The crash occurs both when using the native Creat ...

The bake_transform_with_settings method works in 5.6 but not 5.7

Trying to automate the process of baking transforms via python and the identical code above works in 5.6 but not in 5.7. There are no error messages in the output log. When running in 5.7, it does ...

HLOD generation can run out of space in the FName table

A licensee reported that generating the HLOD for his large WP based level is running out of space in the FName string table.  He tracked the source of the problem to CL 47064601. Upon inspection ...

Enabling the ScriptableToolsFramework plugin causes compile errors in shipping configurations

Enabling the ScriptableToolsFramework plugin causes compile errors in shipping configurations. This also applies to any plugins which depend on it, such as the ScriptableToolsEditorMode plugin. Thi ...

UE5.7 InterchangeGenericAssetPipeline -> MaterialPipeline are not using parent material for material creation on import, was working in UE5.6

Hi there, It feels like a bug that the interchange generic pipeline is not using user-selected parent material for asset import, since it was working back in UE5.6 then we upgrade the engine to 5.7 ...

Orphaned BP actors when using UWorldPartitionBuilder

From an EPS case: --------------------------------- We're seeing a recurring issue where child BP actors are becoming orphaned during any processing that uses UWorldPartitionBuilder. It affects ...

Duplicating OFPA Levels can result asserts when running the WorldPartitionBuilderCommandlet on multiple levels.

The process will assert in UWorldPartition::Initialize on  check(!OuterWorld->PersistentLevel->bAlreadyMovedActors); The log from a debugging session (see attached image) that a LevelInstance ge ...