Particle Bounds Don't Update Correctly After Moving Particle Component Via BP

UE - Graphics Features - Mar 30, 2017

It appears that particle components don't update their bounds correctly when they are moved in a scene. If a particle emitter isn't currently visible at the start of the game it will remain culled. ...

Inaccurate updates to root widget visibility binding

UE - Editor - UI Systems - Apr 6, 2017

Inaccurate updates to root widget visibility binding, so far in my testing, this does not affect the functionality of the binding. Regression: affects 4.13.2, 4.14.3, 4.15.1 binary versions ...

Crash duplicating or deleting any component inside of Actor BP if lights or triggers are present

UE - Gameplay - Blueprint Editor - Apr 25, 2017

When duplicating or deleting a component whilst a point light is also a component within an Actor BP, the editor crashes. See callstack for info. This is a regression. Working: 4.15.2 Broken: 4.16 ...

Auto Exposure in Static Mesh Editor whites out the viewport when Vert Colors is enabled

UE - Graphics Features - May 4, 2017

In the Static Mesh Editor, Enabling Vert Colors causes high exposure in the viewport. Workaround Disable Auto Exposure in the Project Settings > Rendering > Default Settings This is a Regression ...

ShaderCacheTool build fails

UE - Graphics Features - Oct 25, 2017

In 4.18 and 4.19, it is no longer possible to build the ShaderCacheTool. REGRESSION: Yes. The ShaderCacheTool builds successfully in 4.17.2. It looks like the missing MergeShaderCacheFiles property ...

On Linux, Mouse input is not capture in Skeletal mesh editor -> Section Selection right click menu

UE - Platform - Linux - Nov 3, 2017

Attempting to interact with the pop up menu that appears when right clicking in Skeletal Editor -> Section Selection causes the pop up menu to be closed instead. Regression: No - same behavior occu ...

CLONE - ShaderCacheTool build fails

UE - Graphics Features - Nov 20, 2017

In 4.18 and 4.19, it is no longer possible to build the ShaderCacheTool. REGRESSION: Yes. The ShaderCacheTool builds successfully in 4.17.2. It looks like the missing MergeShaderCacheFiles property ...

Reimporting Static Mesh LODs yields unexpected material assignments

Tools - May 24, 2018

Reimporting an asset after making changes causes loss of saved LOD changes when editing a static mesh. Similar issue was logged and fixed for SkeletalMeshes but this issue is still occurring for ...

Non-nativized classes that implement a nativized interface class do not get interface methods called when invoked through a Blueprint function library.

UE - Gameplay - Blueprint - Jul 5, 2018

UObjectBaseUtility::GetInterfaceAddress() fails due to an incorrect serialized value of the 'bImplementedByK2' property within the non-nativized class's Interfaces array on save. See support thread ...

Datasmith is failing in converting UCX geometry to collision shells from Sketchup

UE - Editor - Content Pipeline - Datasmith - Exporters - Aug 21, 2018

Importing a Sketchup file that has the 'UCX_' prefix for collision, the collision is not imported into the Editor. Instead it is imported as a Static Mesh Actor. This is happening in both 4.19.2 ( ...