Unreal Engine Issues

Edit meta data given during FBX import

When you import an FBX with metadata, it will always be prefixed with "FBX". The prefix can be changed via FBX_METADATA_PREFIX_TEXT() on line 112 of FbxImporter.h. This should be freely editable by ...

Support force feedback on iOS and tvOS Gamepads

Unreal Engine should support haptics on gamepads on iOS and tvOS [Link Removed] [Link Removed]  ...

UTexture2D cannot be inherited via plugin

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.

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

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

InstancedStaticMesh displaying corrupt lightmap data

I think I narrowed this issue down to bad UV coordinates being interpreted during the BasePassVertexShader execution applied to instancing. At this line in VertexFactoryGetInterpolantsVSToPS: flo ...

Sorting objects at EndLoad has a non-deterministic behavior

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

SkeletalMesh may lose virtual bone names

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

Crash in editor when loading a procedural mesh that has multiple sections and raytracing is enabled

Crash on multi viewport when streaming in sub level with rect lights