Spline Mesh With Negative Start and End Scale Has Broken Lightmap

Tools - Apr 25, 2017

When you have a negative start and end Scale for a spline mesh the resulting lightmap that gets baked for the mesh will be incorrect. ...

A project on Mac that includes a static library will continue to use the old cached version of the library after the library is updated.

UE - Foundation - Cpp Tools - UnrealBuildTool - Sep 9, 2016

If a static library that is included with a UE4 project is changed, the new version of the library is not used when the project is built again. Instead, the original cached version of the library is ...

Lightmap directionality doesn't work well in UE5

UE - Graphics Features - May 9, 2022

Material preview black when using Static Switch Parameter with Texture Objects

UE - Rendering Architecture - Materials - Aug 28, 2015

Material preview doesn't render correctly with using a Static Switch Parameter with Texture Objects. See attached image ...

AEditorFunctionalTest doesn't show up on Frontend automatically

UE - World Creation - Worldbuilding Tools - World Partition - May 9, 2022

Reverting a BP interface category does not update the context menu

UE - Gameplay - Blueprint Editor - Jul 28, 2020

Shadows of small movable components popping out

UE - Graphics Features - Jan 19, 2017

This must be a regression ...

Skylight has too much influence on Subsurface Scattering

UE - Graphics Features - May 9, 2017

Users on the AnswerHub are reporting that Skylights have too much effect on Subsurface Scattering. The argument here seems to be Movable Skylights versus Static/Stationary and their results regardi ...

Using ConstructorHelpers::FClassFinder in a GameMode constructor may result in a default value or crash if the level is reloaded multiple times.

UE - Gameplay - Oct 27, 2015

Randomly selecting a character class from the GameMode constructor using ConstructorHelpers::FClassFinder can result in default or null character being set when the level is reloaded. It appears tha ...

A Simulating Physics component with StartAwake = false will be awoken by a Welded component

UE - Simulation - Physics - Jan 10, 2025

A Simulating Physics component with StartAwake = false will be awoken by a Welded component If a welding occurs during the call to OnCreatePhysicsState, this breaks the start awake disabled flag. Th ...