Skip Assigning Gamepad to Player 1 does not work

UE - Gameplay - Input - Feb 2, 2024

This is a regression from a long while ago that needs to get fixed ...

Liftoff caused by root motion may leave a Character in walking movement for customized project

UE - Gameplay - Player Movement - Jan 31, 2024

If a Character has active root motion while walking (animation root motion OR a Root Motion Source), and this root motion causes vertical motion that "lifts off", it's possible for the Character to ...

Keep Simulation Changes does not work for Actors that have replaced root component

UE - Gameplay - Components - Jan 31, 2024

RelativeLocation and RelativeRotation in the root component are collected in UActorComponent::AllUCSModifiedProperties, so copying simulation result is skipped in EditorUtilities::CopyActorPropertie ...

FlushPressedKeys doesn't clear EventAccumulators, resulting in stale data

UE - Gameplay - Input - Jan 26, 2024

From the user:  The root of the problem appears to be that KeyState.EventAccumulator still has events stored in the structure for 'LeftAlt'. So, although UPlayerInput::FlushInput is called when the ...

Two Sided Foliage doesn't receive VSM shadow with Opacity 0

UE - Graphics Features - Jan 25, 2024

Two-Sided foliage materials with an Opacity of 0 ignore any shadows cast with Virtual Shadowmaps, even in a completely sealed environment. This did not happen in UE 5.1.1 ...

FScopedEditorWorld doesn't clean up old world when going out of scope

UE - World Creation - Worldbuilding Tools - World Partition - Jan 19, 2024

In a commandlet, when FScopedEditorWorld exits, it leaves references behind and prevents garbage collection of the PersistentLevel and non-spatial actors. This leads to an issue when a second FScop ...

Map actor reconstruction does not reattach external non-root components

UE - Gameplay - Components - Jan 17, 2024

For two map placed actors, if one actor B's non root component is attached to another actor A, the attachment is not retained when actor A reruns its construction script, such as when moving actor A ...

Pre-UE5 serialized FVariant FVector data corruption when deserialized in UE5

UE - Gameplay - LWC - Jan 15, 2024

FVariant is a struct that implements a union of data types, including FVector. When assigning an FVariant an FVector value in engine versions UE 4.27 or earlier, the FVariant will deserialize incorr ...

Double clicking on Interface Function in Blueprint Graph does not take you to the function implementation.

When double-clicking on an interface function call within a blueprint, the expected behaviour is that it will take you to the implementation of this function. However, it currently does nothing. ...