Unreal Engine Issues

Incorrect Lumen Scene direct lighting when objects behind masked landscape

When objects are placed behind or beneath a masked landscape and r.Lumen.HardwareRayTracing.SurfaceCacheAlphaMasking is enabled, the direct light evaluation is incorrect. There are two workarounds, ...

TMatrix<T>::InverseFast() ensure when running URootMotionModifier_SkewWarp::WarpTranslation().

URootMotionModifier_SkewWarp::WarpTranslation() uses InverseFast() within a block of code that is only executed if DeltaTranslation is not nearly zero. The ToRootSyncSpace transform the code builds, ...

TMaps do not function as expected in the details panel when then TMap variable is in a blueprint component

The default element can be added multiple times and changing the value from the drop down. ...

WP: The Generation log report doesn't contain the result of the ActorDescViewMutators

Compress files in resource collector is not working

HZB occlusion is broken on Instanced Stereo

Other engine features requiring HZB data (such as per-instance GPU LOD selection occlusion culling or light grid culling) are also impacted regardless of whether r.HZBOcclusion is enabled. ...

Values for InitialOnly replicated arrays can fail to be captured in replay when removed and re-added between checkpoints

When the first checkpoint is recorded, the correct array properties will be captured in the LifetimeChangelist. When these array items are later removed and another property on the actor is changed, ...

OculusOpenXRLoader.build.cs should be part of all InstalledBuild

The OculusOpenXRLoader module is only required on Android but it should be possible to reference it from any project\plugin that doesn't target that platform.  The user that found the problem is ...

Recompiling an ABP that another ABP has a Property Access dependency on without recompiling/linking the other causes a crash

The crash comes from the pointers in FAnimSubsystem_PropertyAccess::Library::Indirections in the layer ABP from pointing to old/invalid functions and properties from the trash ABP_Manny, as they hav ...

Failed to generate Nanite data for mesh with bDoFastBuild enabled

If "bDoFastBuild" is enabled on a Static Mesh asset, in-editor it will never be able to have Nanite data built for it, preventing the Static Mesh from using Nanite. There is no way to fix this issu ...