Linked graphs that are linked via post process anim bp BeginPlay can be lost on reinitialization of anim instance

UE - Anim - Runtime - Anim Blueprints - Dec 16, 2024

Certain codepaths in USkeletalMeshComponent::InitializeAnimScriptInstance can cause linked anim graphs that are running in Post Process anim bps to be unlinked.  The problem only occurs when the lin ...

Starting 2 editors with remote control plugin enabled will impact performance

UE - Virtual Production - IO - RemoteControl - Dec 16, 2024

Launching a second editor with the websocket server enabled will try to bind to the same address as the first editor, and since the websocket server is running in the game thread, it will block the ...

The CompileAllBlueprintsCommandlet does not list the BPs contained in UWorlds

UE - Gameplay - Blueprint - Dec 16, 2024

hThe use case of the licensee is that he used FindInBlueprints inside the Editor to find a particular text contained in BPs and later used that listing to recompile the BPs using the CompileAllBluep ...

Autokey does not respect min and max limits of control rig animation channel.

UE - Anim - Sequencer - Dec 16, 2024

When using min or max set values for animation channels in sequencer, the sequencer viewport will show different values than what is capable when using autokey functionality. ...

Modifying FinstancedStruct (Blueprint structs) properties inside another FInstancedStruct triggers an ensure and properties do not get saved.

UE - AI - Dec 16, 2024

There is a bug with Blueprint structs having FInstancedStruct as a property. If you modify the DefaultValues of any property of an FInstancedStruct inside the blueprint struct asset, an ensure will ...

Using Depth of Field when "r.PostProcessing.PropagateAlpha" is enabled causes halo effect on higher scalability modes and resolution

UE - Graphics Features - Dec 16, 2024

There is a haloing effect when depth of field is used while post processing also has propagate alpha enabled at higher scalability levels. The effect becomes more obvious as the resolution of the vi ...

iPadOS AR App Crashes when ARKit's "Use Scene Depth for Occlusion" is Enabled

UE - Platform - XR - Dec 13, 2024

Does not crash in 5.4 on same hardware so looks like a regression. Attached Unreal logs indicate source of critical error: 'FARKitCameraOverlayMobilePS' shader uniform expression set mismatched sh ...

Foliage unbuilt instances have incorrect LOD

UE - World Creation - Worldbuilding Tools - Foliage - Dec 13, 2024

From licensee: Foliage instances are not drawn correctly/the wrong LOD is selected while painting in FoliageMode. This is more apparent when setting InstanceSettings>CullDistance>Max to a value != ...

Draw Debug String doesn't render text outside of play

UE - Editor - UI Systems - Dec 13, 2024

When calling the Draw Debug String node outside of play, no text is visible in the viewport. This occurs with Editor Callable functions on placed blueprints as well as from Editor Utility Widgets. ...

Can't get accurate Anim Notify State elapsed duration while in a montage.

UE - Anim - Gameplay - Dec 13, 2024

When GetCurrentAnimationNotifyStateTimeRatio is used inside of a montage it can return the wrong time ratio in certain cases. ...