Unreal Engine Issues

FlushPressedKeys doesn't clear EventAccumulators, resulting in stale data

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 ...

Resizing Animation and Audio sections no longer snaps to other sections

GameplayEffects: Inherited UAssetTags and UTargetTags do not update their referenced tags correctly with inheritance

When inherited, it is reasonable to expect the tags added by the parent to be reflected in the children. If the parent is editted after the children, however, tags that are added or deleted are not ...

Crash when using Property Access node on Animation Blueprint (repro based on Lyra Starter Game animation layers)

When using the Property Access node on Animation Blueprints to gain performance by better exploring parallel processing, it is possible that the underlying accessed property or any intermediate acce ...

Crash when editing members of a struct contained within a UObject instanced inside a USceneComponent

When implementing a USceneComponent in C++, one may want to add one or more internal UObjects to hold some data or perform specific tasks (this is also done by several UE built-in components). These ...

[AI] FInstancedStruct is not dupilicated properly if values are different from an Actor's defaults

A licensee reports that the values of an FInstancedStruct do not get properly duplicated if they differ from the default values of the Actor or TArray to which they belong. Possible short-term wo ...

Build All Levels fails with duplicate level instances

Comments created using the C hotkey do not respect colour or location on graph re-open

This issue seems to only occur when using the hotkey to create comments.  Using the r-click menu seems to work as expected. ...

WorldConditions forward declares USmartObjectDefinition without using the class

In WorldConditionsEditor, at least DataRefDetails and DefinitionDetails forward declare USmartObjectDefinition without using the class. The uplugin nor the build.cs does not list SmartObjects as a ...

Branch node outputs cannot be wired to already connected Execute pins on downstream nodes

When attempting to connect the output of a branch node to a downstream node that is already connected to one of the other outputs of the branch, users see a 'cycles are not allowed' message preventi ...