Motion blur on player/weapons with TAA

UE - Rendering - May 27, 2021

Looks like this can occur with motion blur off aswell, so likely it's a TAA motion vector issue. Similar issue occurs in UE5 (see [Link Removed]) ...

Ornatrix Alembic files display unnatural movement in Groom after import

UE - Simulation - Physics - May 26, 2021

Video of the issue here - [Link Removed] ...

bUseAsOccluder not taking effect when prepass is disabled

UE - Rendering - May 25, 2021

See the licensee discussion for details discussed with [Link Removed] ...

RHILockTexture crash with ray tracing enabled

UE - Rendering - May 25, 2021

Looks like it's a resource state tracking assert issue on the resource. ...

Material Instance changes are not propagating to layers.

UE - Rendering - May 25, 2021

Please note, during this repro, when I attempted to change the colour of the layer_inst using the colour wheel, it would not save the updated colour. This may be a separate bug. ...

UTexture2D cannot be inherited via plugin

UE - Rendering - RHI - May 18, 2021

When compiled, linker errors appear 1>LensDistortionBlueprintLibrary.cpp.obj : error LNK2001: unresolved external symbol "public: virtual void __cdecl UTexture2D::Serialize(class FArchive &)" (?Ser ...

Editor becomes unresponsive for long periods between edits of a user-defined enum type when it's referenced by one or more user-defined struct types.

UE - Gameplay - Blueprint - May 17, 2021

After adding a member to a user-defined struct type and changing the member type to a user-defined enumeration, repeated edits to that enumeration will eventually cause the editor to become increasi ...