Actors are not properly restored when undoing a Replace Selected Actors transaction

UE - Gameplay - Components - Jul 22, 2020

When undoing a Replace Selected Actors operation, the resulting actor is corrupt and triggers an ensure where the root component is in the process of being destroyed. This is a regression that poppe ...

Can't update position with SetPositionInViewport when enable global invalidation

UE - Editor - UI Systems - Jul 22, 2020

When GlobalInvalidation is enabled, do not update to the position set by SetPositionInViewport. It works fine when GlobalInvalidation is disabled. ...

Blueprint Data Loss with Certain Variable Names

UE - Gameplay - Blueprint - Jul 21, 2020

Certain characters within blueprint variables names will cause data loss when duplicating an actor instance. For example if a variable name contains '(', '{', or '[' it doesn't retain the variable's ...

Duplicating emitter asset leads to cross communication between modules

UE - Niagara - Jul 21, 2020

Copying an emitter asset through the content browser will lead to cross communication when the two are used in the same system  ...

ClothConfigNV is reset when reloading assets that had been saved with 4.24

UE - Simulation - Physics - Character - Jul 21, 2020

The new config object is created with the same serialization name as the legacy one "ClothConfigNV", causing the legacy data to be reset prior to migration. Replacing In UClothingAssetCommon::AddCl ...

Duplicating event section will break binding after editor re-open

UE - Anim - Sequencer - Jul 20, 2020

Duplicating an event trigger or repeater section will break the binding when restarting the editor. ...

Ensure when restoring pre-animated state on Skeletal Mesh with Linked Anim Graph

UE - Anim - Sequencer - Jul 20, 2020

Download and launch attached projectPIEPress the "E" key to play the sequenceWait until sequence finishes RESULT Ensure in FAnimInstanceProxy::GetSkeleton as a result of restore state calling Unbind ...

Memory leak in Test build when moving ISM with UpdateInstanceTransform

UE - Graphics Features - Jul 20, 2020

This leak occurs in Test builds, but not in Development builds. Updating InstancedStaticMesh with UpdateInstancedTransform every frame causes a memory leak. This screenshot was taken using Mempr ...

A Blueprint containing an array Swap node will fail to be nativized.

UE - Gameplay - Blueprint - Jul 17, 2020

Blueprint assets that utilize an array "swap" node to swap elements cannot currently be converted to C++. Current workaround: Either avoid use of the "swap" node or exclude the Blueprint asset from ...

InstancedFoliageActor experiences issues with floating point precision when far away from World Origin and is not affected by Origin Rebasing

UE - World Creation - Worldbuilding Tools - World Composition - Jul 17, 2020

Foliage generated by Landscape Grass Type do not encounter this issue. Only hand painted foliage with foliage tool is not affected by rebased origin. Foliage vibrates when it is located in long dist ...