Blueprint diff tool displays diffs for animation blueprints with no changes

UE - Gameplay - Blueprint - Oct 25, 2023

From UDN: [Link Removed] ...

Non-edit layers landscape don't work adequately with Nanite landscape while painting

UE - LD & Modeling - Terrain - Landscape - Oct 24, 2023

Result : while displaying the Nanite version of the landscape, the paint layers behave erratically (see video : [Link Removed])  If rebuilding the Nanite data, the bug gets fixed until the user sta ...

Renaming a level by WorldPartitionRenameDuplicateBuilder fails if the level contains GroupActor with non-spatial actors

UE - World Creation - Worldbuilding Tools - World Partition - Oct 24, 2023

Referece to the source level should be fixed by FReplaceObjectRefsArchive, but it is not working because ArIsModifyingWeakAndStrongReferences is not set. It can be fixed by setting the flag.class FR ...

Collision build of LiDAR point cloud assets at runtime does not apply

UE - Editor - Content Pipeline - Datasmith - Oct 24, 2023

Collision build at runtime for LiDAR point cloud does not apply. This applies to Editor and Standalone. If you do not allow collision builds at runtime, this module should not be available at runtim ...

Ensure/failure when changing the class of a scene component that has bVisualizeComponent enabled

UE - Gameplay - Blueprint Editor - Oct 20, 2023

Failure occurs at compile time during GC when the replacement component that we create is being destroyed. This component includes the BillboardComponent instance that's attached to the scene compon ...

Overriding a struct member field's default value on a BP-added component in a BP asset will no longer allow the user to edit that struct member on instances of that BP's component if the member is deprecated.

UE - Gameplay - Blueprint - Oct 19, 2023

Properties that are deprecated are (incorrectly) not currently being propagated to instances by the duplication logic that we use to instance BP-added components as part of Actor-based BP constructi ...

Unexpected corrections when sliding against other characters

UE - Gameplay - Player Movement - Oct 19, 2023

We are seeing unexpected movement corrections sometimes when pushing one player character up against another character that isn't moving, or against other static primitives that have round features ...

MPCook: Fix replication of UObject::CookAdditionalFilesOverride

UE - Foundation - Core - Cooker - Oct 19, 2023

MPCook relies on global data that is accumulated during package cooks on CookWorkers be replicated to the CookDirector. Some global data that is accumulated during package cooks is CookAdditionalFi ...

Non-existing config file loading could cause memory leak

UE - Foundation - Core - Oct 19, 2023

The cause of this problem is the Engine has code paths which register a new allocated object to Map without deleting the previous object. In the repro project, whenever hitting Space Bar, the level ...

Using the end of the curve as a weighted tangent does not yield the expected value.

UE - Anim - Runtime - Oct 16, 2023

When changing the tangent value, the last value is sometimes not 1.0 [Reproduce sample project] [Link Removed] ...