Unreal Engine Issues

Recast: FindDistanceToWall can return incorrect results on shared edges with Excluded Nav Area

Context ARecastNavMesh::FindDistanceToWall can be used to find the closest 'wall' on a nav mesh, given a queried position. A wall can be:any boundary towards the end of the nav mesh (outer rectangl ...

Cinematic Prestreaming does not work in Shipping Builds

When the Cinematic Prestreaming plugin is used to generate and cache Virtual Texture Feedback requests, they work when played back in Unreal Editor. A Licensee has reported that they do not improve ...

A non moving looping camera sequence flickers.

There is a small flicker on a looping single camera sequence where the camera doesn't move. Because the camera is static, you would not expect to see a flicker in lighting conditions. ...

Broken hair material with light function

Hair Materials do not react to Light Functions in the same way as other Materials. There is a visual difference between a Directional Light at 1 lux with no Light Function and a Directional Light at ...

Input event bound to a widget are not triggered after the widget is recreated

The enhanced input events defined on the widget will no longer be triggered after the widget is recreated. Until the widget is added with AddToViewport, input events will be triggered correctly. If ...

UEditorUtilityWidgetBlueprint has state (RegistrationName, CreatedUMGWidget) that assumes a single registration at any time, when in fact multiple tabs can be registered and concurrently sharing this object

Sequencer events with a payload of struct containing Object do not work

A structure containing Object as a parameter is misrecognized as a single Object and loses the parameter. This behavior was brought in by CL-27785664. ...

Modifying the properties of a ChildActorComponent in a child blueprint can modify the parent actor ChildActorComponent properties.

When a property of a ChildActorComponent is modified in a child class, the parent ChildActorComponent class can also get modified. This happens when the Parent blueprint actor has a ChildActorCompo ...

GAS: OnTagUpdated() not called when calling SetLooseGameplayTagCount()

Context AbilitySystemComponent has a virtual function virtual void OnTagUpdated(const FGameplayTag& Tag, bool TagExists); that gets called when a gameplay tag gets added or removed, so whenever ...

VR Preview crash when shadow quality is set to low

[/Script/Engine.RendererSettings] r.Tonemapper.Sharpen=2 r.TemporalAA.Upsampling=False r.DefaultFeature.AutoExposure.ExtendDefaultLuminanceRange=True r.LightPropagationVolume=0 r.ReflectionCaptureRe ...