The hair shading near the screen edge becomes whiter if only a skylight applies

UE - Graphics Features - Apr 4, 2023

This appears to be an issue with Lumen, with some off-screen information making its way on-screen during an upsampling pass. We checked a Renderdoc capture and that is where it seems to come from. ...

Crash when deleting BindingOverrides if the target property is left open on the details panel

UE - Anim - Sequencer - Sep 22, 2023

Crash if opening ALevelSequenceActor::BindingOverrides in the details panel and run a process that empties the BindingOverrides elements. Workaround: FMovieSceneObjectBindingID FMovieSceneObjectBi ...

Launching iOS build from Xcode fails after initial install

UE - Platform - Apple - Feb 21, 2024

Xcode has an issue with repeated launches onto an iOS device.  After the initial install, Xcode is unable to install any other builds of that same app due to some sort of codesigning issue.  A work ...

SubobjectDataSubsystem functions do not show up in blueprint editor.

UE - Gameplay - Blueprint - Apr 15, 2024

Licensee was not able to access SubObjectDataSubsystem functions from their blueprint editor, as the functions (such as "GatherSubobjectDataFromInstance") did not show up in the right-click menu and ...

Local fog volume rotation causes offset issues at high world position values

UE - Graphics Features - May 20, 2024

Local fog volumes have a substantial offset when placed at a far distance from world origin and is then rotated. This was not the case in 5.3 when tested under the same conditions, so this is likely ...

Displacement + TAA causes "vibrating"/"buzzing" artifacts

UE - Rendering Architecture - Jun 4, 2024

There is a buzzing artifact on shadows that is seen in the provided test project. The problem seems to be far more subtle when VSM is turned off. Licensee mentions that turning r.Velocity.ForceOutpu ...

AlwaysTickPose is prone to double firing notifies in a dedicated server setup.

UE - Anim - Gameplay - Jun 11, 2024

See UDN for more info: https://udn.unrealengine.com/s/question/0D5QP00000MfU8l0AF/uanimnotifynotify-is-called-twice-for-the-same-notify-on-server-in-a-multiplayer-game ...

"Assertion failed: CellIndex < CellIndexMax" when there are a lot of HISM foliage in a level

UE - World Creation - Worldbuilding Tools - Foliage - Aug 19, 2024

Users have come across an issue in 5.4 that causes an assert when many foliage or HISM objects are placed in a level due to a cell size limit. ...

Material is not always updated after SketchUp file reimport.

TM - Interoperability - Dec 4, 2024

The second file uses the same material as the first one, but it's color has been modified in the DCC.  Not reproducible with Datasmith import. In that case the material is correctly updated in all c ...

Blueprint array nodes do not display comments

UE - Gameplay - Blueprint - Mar 6, 2015

When you create an array node within a blueprint and add a comment to it, it doesn't show up. This includes the 'add' or 'remove' nodes that are pulled from the original array node. This seems to o ...