r.MaxAnisotropy does not work in editor

UE - Rendering - May 21, 2021

Setting r.MaxAnisotropy by console in editor has no effect on texture sampler's MaxAnisotropy. If the startup value of r.MaxAnisotropy is 8, then the MaxAnisotropy is always 8 no matter how  r.MaxA ...

FileSystemDerivedDataBackend may output a corrupted access log

UE - Foundation - Core - Derived Data - May 20, 2021

This problem is caused by the AccessLogWriter has not been flushed at the termination. The following workaround flushes the Writer.class FFileSystemDerivedDataBackend : public FDerivedDataBackendInt ...

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.

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 ...

VolumetricLightmap doesn't work when shifting a level by world origin rebasing

UE - Rendering - May 17, 2021

VLM is not handled when rebasing. The following workaround works. void SetupPrecomputedVolumetricLightmapUniformBufferParameters(const FScene* Scene, FEngineShowFlags EngineShowFlags, FViewUniform ...

Sorting objects at EndLoad has a non-deterministic behavior

Core - Developer Iteration - May 14, 2021

This non-deterministic behavior is caused by sorting by program address. ...

SkeletalMesh may lose virtual bone names

UE - Editor - Framework - Asset Build - May 14, 2021

This Jira is there to make sure we load the skeleton asset before the skeletalmesh asset need it ...

HeaderMarkForPacketInfo.GetNumBits() == 0 when closing NetConnection during Tick

Networking - May 12, 2021

Licensee reported getting this error on PS4 after losing internet connection or putting the console into rest mode. See linked UDN for callstack. The NetConnection calls Close during its Tick, due ...

When the sequencer is shot, the constraint Binding ID becomes an unresolved binding

Anim - Sequencer - May 12, 2021

This problem is not reproduced in 4.25. ...

SkyLight IBL looks blurry on Android

Platform - Mobile - May 12, 2021