Crash when breaking Level Instance within Data Layer Asset

UE - World Creation - Worldbuilding Tools - World Partition - Feb 2, 2023

A crash occurs when breaking a level instance contained in a data layer.  This does not occur in 5.0.3, however the behaviors of Data Layers are different in 5.1 where the Data Layer asset is added ...

UResavePackagesCommandlet::CheckoutFile() logs warnings for skipped files

UE - Foundation - Cpp Tools - Automation Tool - Feb 1, 2023

User reported. UResavePackagesCommandlet::CheckoutFile(const FString& Filename, bool bAddFile = false, bool bIgnoreAlreadyCheckedOut = false) has a parameter to ignore files that are already ch ...

Components copy/pasted from an actor instance's SCS can't be deleted from a Blueprint

UE - Gameplay - Blueprint Editor - Jan 31, 2023

SCS added components pasted from an actor instance in the level editor cannot be deleted from the target Blueprint because the component template has the RF_ArchetypeObject flag. ...

Debugging Motion Matching in 5.1, looping animations don't loop root correctly

UE - Anim - Gameplay - Jan 31, 2023

Just trying a few simple animations in 5.1, I have a few short looping cycle animation that go in different directions. I see very bad results and it looks like it's because of how MM is assuming th ...

Fbx Importer: Need to clamp incoming vertex color

UE - Editor - Content Pipeline - Import and Export - Jan 30, 2023

Animation Layer Interface content filter overrides other content filters

UE - Editor - Content Pipeline - Content Browser - Jan 30, 2023

Animation Layer Interfaces are overriding the filter making it so only that asset type is visible even when paired with other filters.  There is an exception to this with the blueprint interfaces fi ...

FBasePassMeshProcessor crashes in ODSC code because the WorldGridMaterial doesn't support translucency

UE - Rendering - Architecture - Jan 30, 2023

UDN: [Link Removed] Slack: [Link Removed] Then, the return value of TryAddMeshBatch is determined by FBasePassMeshProcessor::Process. When the crash occurs, GetBasePassShaders fails to get the shad ...

Make literal container nodes (e.g. MakeArray) do not cast object ref output terms linked to interface-typed input pins.

UE - Gameplay - Blueprint - Jan 28, 2023

As with most nodes, object reference outputs can be directly connected to interface-typed inputs on "make container" nodes (e.g. "MakeArray") if the object's class type implements the interface clas ...

Niagara particles bounce instead of resting on AMD GPU in SM6

UE - Rendering - Jan 27, 2023

Additional Info URL [Link Removed]…]2F00O4z000006EGZXEA4%2Fview%3FqueryScope%3DuserFolders Link to repro - [Link Removed] Old UDN question that may be relevant, similar visual bug - [Link Removed] ...