Cooker: Research and recommend a solution for third-party systems to aggregate data from cooked UObjects

UE - Foundation - Core - Cooker - Mar 6, 2024

As with shader compilation, some third-party plugins need to accumulate information about all UObjects cooked in a cook session, and write their data to a database at the end of the cook; the databa ...

PostLoadGroup can cause materials to cache GWhiteTexture into uniform expressions

UE - Rendering Architecture - Mar 6, 2024

It may occur that during loading screens, materials using material layers will load with GWhiteTexture before the real textures are ready. This seems to be because of a race condition due to PostLoa ...

When an active Niagara Component is moved and reset+reactivated in the same frame, "Interpolated Spawning" causes "Spawn Burst Instantaneous" to spawn particles in the previous frame's outdated location

UE - Niagara - Mar 6, 2024

Consider a Niagara System with an Emitter in "Global Space" that has "Interpolated Spawning" active and a "Spawn Burst Instantaneous" module with a "Spawn Time" of 0.0 (for example, the built-in Con ...

Incorrect Level Instance Bounds with non-trivial transform

UE - World Creation - Worldbuilding Tools - Level Instances - Mar 5, 2024

From licensee: The streaming bounds of an instantiated level instances are incorrect in the world partition editor. When the bounds are computed for a level instance during FLevelInstanceActorDe ...

TakeRecorder does not add a track to a level sequence when niagara FX is spawned

UE - Anim - Sequencer - Mar 5, 2024

In UTakeRecorderActorSource::EnsureObjectTemplateHasComponent() function, MakeUniqueObjectName() generates the same name of a component which CachedObjectTemplate for TakeRecorder has already had. T ...

"Override Function" search box in the Blueprint Editor does not match actual function name (only its display name)

UE - Gameplay - Blueprint Editor - Mar 5, 2024

This is a quality-of-life issue for UE users. The issue was also detailed by the UDN user in a video in the linked UDN case. The Blueprint Editor provides an "Override Function" functionality in th ...

Landscape holes are poorly represented in global distance field

UE - LD & Modeling - Terrain - Landscape - Mar 4, 2024

FVulkanDynamicRHI::RHIReadSurfaceData​ incorrect for FLinearColor​.

UE - Rendering Architecture - RHI - Mar 4, 2024

The FLinearColor implementation for FVulkanDynamicRHI is incorrect. FLinearColor stores 32 bit floats in linear space, while FColor stores 8 bit integers encoded with sRGB applied. The implementatio ...

When duplicating multiple actors with alt+drag, Translation/Rotation widget goes to incorrect coordinate space

UE - Editor - Workflow Systems - Mar 4, 2024

Note: This bug has been observed in all tested engine versions, from UE 4.24 to UE 5.3 and in ue-main. When shift+selecting multiple actors in the Level Editor, the currently-active transformation ...