Draw as Border is not limited to sprite area in UMG

UE - Editor - UI Systems - Apr 14, 2017

UMG supports sprite as an image, but using this as source do not correctly cut sprite's region which limits border textures to be separated textures. If the Image has a material, size do not match ...

Switch on Gameplay Tag Container node does not compile

UE - Gameplay - Blueprint - Jun 9, 2017

It looks like the Switch On Gameplay Tag Container node stopped working in 4.15. The Switch On Gameplay Tag works fine. ...

MaterialInstance ScalarParameter's desc can not upadate.

UE - Rendering Architecture - Materials - Jul 19, 2017

When this problem occurs, "MaterialExpression" is null in FMaterialInstanceParameterDetails::GetParameterExpressionDescription. ...

[CrashReport] Mac crash - FMetalRenderPipelineDesc::CreatePipelineStateForBoundShaderState

UE - Rendering Architecture - RHI - Aug 25, 2017

This is an infrequent Mac crash that has been affecting users since at least 4.15. Users have not provided any descriptions of their actions when the crash occurred. The callstack is similar to the ...

When Packaging a Blueprint Nativized Game, Child Actor BeginPlay is ignored and Parent BeginPlay is triggered instead

UE - Gameplay - Jul 5, 2018

In a Blueprint Nativized Packaged Game a child Blueprint will trigger its parent logic instead of its own when it is called. This was reported in 4.20 Preview 5 (CL-4173640). This issue has been r ...

Alembic file doesn't play animations when imported as Skeletal Mesh

OLD - Anim - Aug 21, 2018

When importing an Alembic file as a Skeletal, the animation and morph targets keys are there but when played in the Viewport or Sequencer there is no animation. This was reported and tested in 4.2 ...

IsTraceHandleValid with default FTraceHandles has unexpected behavior on the first frame

UE - Simulation - Physics - Sep 18, 2018

Because both FWorldAsyncTraceState's CurrentFrame and FTraceHandle are default initialized to 0, on the first frame, if a new Asnc Trace starts all default FTraceHandles will reference the same (now ...

Gameplay Abilities: FAttributeSetInitterDiscreteLevels::PreloadAttributeSetData does not allow FGameplayAttribute.

UE - Gameplay - Jun 19, 2019

Moving from "float" to "FGameplayAttribute" is causing a test to fail. ...

Material Parameter Collection Values not Updating in Simulate if "Run Dedicated Server" is Checked

UE - Networking - Jul 15, 2019

Material Parameter Collection Values not Updating if "Run Deadicated Server" is Checked Working as expected in 4.21 CL# 4753647 Found in 4.22 CL# 7053642, 4.23 Preview 1 CL# 7236301, and 4.24 CL# ...

Multiple Planar Reflections are not captured when forward shading

UE - Graphics Features - Oct 25, 2019

After enabling forward shading, having two planar reflections in the scene causes one instance to not render properly. Tested in 4.22.3 (CL - 7053647), 4.23.1 (CL - 9631420), 4.24 (CL - 9828119), 4 ...