Adding a Pass By-Reference input parameter to an event dispatcher is allowed, but causes a warning when called.

UE - Gameplay - Blueprint - Nov 19, 2018

You can add a pass-by-reference input variable to an Event Dispatcher, but it will will result in compile warnings, and changes to that input will not affect the value of the variable in the caller. ...

Niagara Component is considered for GetActorBounds With "Only Colliding Components" Enabled

UE - Niagara - Dec 27, 2018

Niagara Component is considered for GetActorBounds With "Only Colliding Components" Enabled. Found in 4.20 CL# 4369336, 4.21 CL# 4613538, 4.22 CL# 4666322 ...

PlanarReflectionCaptureComponent preview crash

UE - Graphics Features - Mar 15, 2019

Toggling the Preview Plane boolean for the Planar Reflection Capture Component causes the editor to crash. Tested in 4.22 (CL - 5365847), 4.23 (CL - 5408081) ...

Unable to package for Windows 64-bit while Pixel Streaming plugin is enabled

PixelStreaming - Apr 2, 2019

Packaging for Windows 64-bit with the Pixel Streaming bug enabled causes the packaging process to fail. Regression?: Yes This does not occur in 4.22 release (CL#5660361) ...

Ray Traced Reflections Get Darker The Higher The Rougness Value is for Metallic Materials

UE - Graphics Features - Lumen - Jun 11, 2019

Instead of reflecting an average color of the surrounding, reflections become black with increased roughness values. Found in 4.22 CL# 6574378 and 4.23 CL# 6925347 ...

SpiralBlur-SceneTexture Does Not Compile If Raytracing Enabled

UE - Graphics Features - Lumen - Jul 22, 2019

The material function SpiralBlur-SceneTexture, does not compile in DX12 mode. Found in 4.22 CL# 7053642, 4.23 CL# 7321677, 4.24 CL #7474192 ...

Tessellated Materials Displayed as 0 in Shader Complexity ViewMode

UE - Graphics Features - Sep 11, 2019

Tessellated Materials Displayed as 0 in Shader Complexity ViewMode. Found in 4.22 CL# 7053642, 4.23 CL# 8386587, 4.24 CL# 8588088 ...

Cannot change Collision Profile of BP component instances

UE - Simulation - Physics - Oct 24, 2019

BP instances placed in level cannot have their components' collision profiles modified to anything other than default and custom. Note that this did not occur in 4.22 (after applying the separate ...

[Feature Request] ReferenceViewer: Accept dynamic collection

Tools - Oct 29, 2019

In 4.23, Setting a dynamic collection to the collection filter slot does not display any result. And there are no information about dynamic collection doesn't work in collection filter. (FCollectio ...

Parameterized Vector4 is treated as Float3

UE - Graphics Features - Aug 28, 2020

A Parameterized Vector4 are being treated as Float3. This prevents users from being able to use Vector4s in an If node during runtime. This is seen as far back as //UE4/Release4.22 cl 8065155 so th ...