Unreal Engine Issues

Navigation: Exiting game while async nav building tasks are running can cause null pointer access of OctreeController.NavOctree from worker thread

Context Projects can turn on the project setting bDoFullyAsyncNavDataGathering to execute navigation mesh building tasks on worker threads. Some of these tasks will access the NavOctree, whose life ...

Hair Material's Tangents input has no effect in PathTracing

Expectation: Tangent should work on Hair Material ...

Build lighting for single stationally light level generates a shadow map in PF_B8G8R8A8 format

Texture format override to BGRA8 due to changes in CL-30603716. The following code can restore the previous behavior. void FShadowMapPendingTexture::StartEncoding(ULevel* LightingScenario, ITexture ...

Null Material Layers in Material Instances cause Opacity Mask and WPO to break on Nanite Meshes

When a Material Instance is loaded that has a nullptr layer in StaticParametrs.Materiallayers.  The Material Instance will create it's own CachedExpressionData but the ConnectedParameterMask will be ...

Additive Niagara Sprites are rendered with offset in right eye

Investigate Actors assigned to both partitions

Static/stationary child actor components are invisible and/or move position when placed inside a dynamically loaded level

When loading a non-world partitioned level into a persistent world partitioned level, parent actors with child actor components within the loaded map will move position or become invisible. Within t ...

The Open Asset dialog is disabled during breakpoint

RewindDebugger draws debug capsules with its base location as center

Context UE_VLOG macros can be used to capture debug shapes into both a Visual Logger recording and a Rewind Debugger recording. Problem In the Rewind Debugger, the capsule shapes are drawn at an in ...

Volumetric Fog has no shadow on mobile