Unreal Engine Issues

BulkDataManifest asset is non-deterministic

FPackageStoreBulkDataManifest:: Data ** is not sorted. It generates a difference, Here's a workaround void FPackageStoreBulkDataManifest::Save() { TUniquePtr<FArchive> BinArchive(IFileManager:: ...

Updating a material layer may not update materials that are using that material layer instance

Material layer instances do not generate a valid UMaterialFunctionInterface::StateId. For this reason, materials and material instances that use material layer instances will not recompile their sh ...

TextBlock kerning does not match the screen resolution scale.

The kerning of the TextBlock does not seem to follow the dpi scale of the screen resolution.When the Image (which captures the display of the TextBlock) and the TextBlock are displayed, they match a ...

Ray traced reflections skewed with un-combined meshes

The drawing order of widgets becomes wrong when GlobalInvalidation is enabled,

When trying to create a widget with specific steps, the drawing order may not be correct. This is not reproduced when Global Invalidation is disabled, and the state can be restored. This issue is pr ...

Detaching part of the Visual Logger window and then closing the Visual Logger tab causes a crash

It seems that when a section of the Visual Logger is detached from the window as a whole and then that window is closed when docked next to the Content Browser, then the engine crashes. However, whe ...

Thin Translucent materials opaque with FS lighting mode and Output velocities active

Im not 100% sure this is a combination of settings that "should" work anyway, but need someone to have a look.Thin TranslucencyOutput velocities during base passForward Shading lighting modeProject ...

Crash when adding Rectangle Lights to a game with multiple players while Raytracing is enabled

A user reported this issue to us through Salesforce. They initially said it crashed with both Spot Lights and Rectangle Lights, but I was only able to repro with Rectangle lights. Additionally, I di ...

"Primitives with unbuilt interactions" not clearing after lighting scene rebuild

Regression No, according to affect version 4.26 and 4.27 [2021.10.29-17.01.06:085][830]Primitives with unbuilt interactions: 6[2021.10.29-17.01.06:085][830] Primitive FoliageInstancedStaticMeshComp ...

Instances of Blueprints implemented native interface cannot be assigned to interface variables

FInterfaceProperty::SerializeItem (and ImportText) attempt to determine if the passed in object implements the interface in question. They do this by calling GetInterfaceAddress, which tries to get ...