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

UE - Anim - Rigging - Control Rig - Nov 27, 2025

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

UE - Anim - Sequencer - Nov 26, 2025

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

UE - World Creation - Worldbuilding Tools - Nov 26, 2025

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 ...

Orphaned BP actors when using UWorldPartitionBuilder

UE - World Creation - Worldbuilding Tools - World Partition - Nov 21, 2025

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.

UE - World Creation - Worldbuilding Tools - World Partition - Nov 21, 2025

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 ...

Placed render targets are not initialized properly in D3D12

UE - Rendering - Architecture - RHI - Nov 21, 2025

ScreenshotCapturedDelegate is never called in HDR

UE - Platform - Console - Nov 21, 2025

In UGameViewportClient::ProcessScreenShots, when bHdrEnabled is true, the Bitmap array is never filled (the capture code uses BitmapHDR), so ScreenshotCapturedDelegate is never called for any custom ...

Landscape weight-blended layers don't paint exclusively anymore

UE - Graphics Tools - Terrain - Landscape - Nov 20, 2025

Groom assets can no longer be created without curves data

UE - Graphics Features - Nov 18, 2025

It used to be possible to create an empty Groom assets without an Alembic file. However, this is no longer possible because curve data is required This workflow is useful to create grooms that onl ...