Delta struct serialized fast arrays replicating new elements with no changelist

Networking - Jun 14, 2021

There is a scenario where delta struct serialized fast arrays can replicate changes that introduce additional elements to the array, but without changelists containing the new data. This needs furt ...

Color space transform in the UI composition is incorrect on DX12 HDR (r.HDR.UI.CompositeMode=1)

Rendering - Jun 11, 2021

Color space conversion in the UI composition is incorrect on DX12 HDR. In the main() function In CompositeUIPixelShader.usf, you can see the following color space transform.// sRGB -> RRT -> ODT ...

Overriding a subobject's class in a native base class can lead to that component being null in derived Blueprints (FObjectInitializer::SetDefaultSubobjectClass)

Gameplay - Blueprint Compiler - Jun 10, 2021

Overriding a subobject's class in a native base class can lead to that component being null in derived Blueprints.  ...

Dragging control rig Blueprint onto a sequence will fail to create a new spawnable

Anim - Sequencer - Jun 9, 2021

The class FControlRigObjectSpawner is set-up to spawn control rigs from a sequence, but it fails to implement and override for CreateNewSpawnableType, so spawnables can only be created by converting ...

Crash when using EditConditionHides with a struct in an array

Tools - UX - Jun 8, 2021

A crash can occur in FStructurePropertyNode::GetValuePtrOfInstance when using EditConditionHides with arrays of structs. When deleting an element from the array, ParentBaseAddress will be null. ...

Crash when sculpting on duplicated landscape with edit layers enabled

Tools - Landscape - Jun 8, 2021

Crash happens when trying to sculpt on a duplicated landscape that has edit layers enabled. This crash does not occur for landscapes that are duplicated with edit layers disabled. ...

Shader compilation error occurs when using values sampled from texture for Customized UV1

Rendering - Features Teams - Jun 3, 2021

Shader compilation error occurs when using values sampled from texture for Customized UV1. No problem when connected to Customized UV0. This problem compiles well if I change the value of Const to ...

MergeActors Proxy Tool Outputs Incorrect Result with HISMC

Tools - Merge Actor - Jun 1, 2021

Running the MergeActors proxy tool on an actor that has an HISMC and both its scale and rotation changed will output a proxy incorrectly. ...